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Table of UNC/UNF inch threads

Introduction

Inch threads, especially UNC (Unified National Coarse) and UNF (Unified National Fine), are standardised threads used mainly in industry, especially in the United States and Canada. They differ from metric threads in that the dimensions are given in inches rather than millimetres. On this page you will find a detailed table of UNC and UNF inch threads, together with data on thread pitch, outside diameter and other relevant technical parameters.

What are UNC/UNF threads?

UNC (Unified National Coarse) inch threads are coarse threads used in applications where greater wear resistance and ease of installation are desired. UNF (Unified National Fine) are fine threads that provide greater precision and better fastening with smaller thread sizes.

Main differences:

  • UNC: Smaller thread pitch, thicker coils, more robust in applications requiring greater strength.
  • UNF: Larger thread pitch, thinner coils, better precision, used in applications requiring more accurate connections.

Table: UNC/UNF inch threads

External thread Nominal size,
TPI, series		 Class Tolerance
(inches)		 Min. major
(inches)		 Max. major
(inches)		 Min.
(inches)		 Min. pitch
(inches)		 Max. pitch
(inches)		 UNR
minor diameter
(inches)
Internal thread Min. minor
(inches)		 Max. minor
(inches)		 Min. major diameter
(inches)
External 0-80 UNF 2A 0.0005 0.0563 0.0595 - 0.0496 0.0514 0.0446
Internal 2B 0.0465 0.0514 0.0519 0.0542 0.0600
External 0-80 UNF 3A 0.0000 0.0568 0.0600 - 0.0506 0.0519 0.0451
Internal 3B 0.0465 0.0514 0.0519 0.0536 0.0600
External 1-64 UNC 2A 0.0006 0.0686 0.0724 - 0.0603 0.0623 0.0538
Internal 2B 0.0561 0.0623 0.0629 0.0655 0.0730
External 1-64 UNC 3A 0.0000 0.0692 0.0730 - 0.0614 0.0629 0.0544
Internal 3B 0.0561 0.0623 0.0629 0.0648 0.0730
External 1-72 UNF 2A 0.0006 0.0689 0.0724 - 0.0615 0.0634 0.0559
Internal 2B 0.0580 0.0635 0.0640 0.0665 0.0730
External 1-72 UNF 3A 0.0000 0.0695 0.0730 - 0.0626 0.0640 0.0565
Internal 3B 0.0580 0.0635 0.0640 0.0659 0.0730
External 2-56 UNC 2A 0.0006 0.0813 0.0854 - 0.0717 0.0738 0.0642
Internal 2B 0.0667 0.0737 0.0744 0.0772 0.0860
External 2-56 UNC 3A 0.0000 0.0819 0.0860 - 0.0728 0.0744 0.0648
Internal 3B 0.0667 0.0737 0.0744 0.0765 0.0860
External 2-64 UNF 2A 0.0006 0.0816 0.0854 - 0.0733 0.0753 0.0668
Internal 2B 0.0691 0.0753 0.0759 0.0786 0.0860
External 2-64 UNF 3A 0.0000 0.0822 0.0860 - 0.0744 0.0759 0.0674
Internal 3B 0.0691 0.0753 0.0759 0.0779 0.0860
External 3-48 UNC 2A 0.0007 0.0938 0.0983 - 0.0825 0.0848 0.0734
Internal 2B 0.0764 0.0845 0.0855 0.0885 0.0990
External 3-48 UNC 3A 0.0000 0.0945 0.0990 - 0.0838 0.0855 0.0741
Internal 3B 0.0764 0.0845 0.0855 0.0877 0.0990
External 3-56 UNF 2A 0.0007 0.0942 0.0983 - 0.0845 0.0867 0.0771
Internal 2B 0.0797 0.0865 0.0874 0.0902 0.0990
External 3-56 UNF 3A 0.0000 0.0949 0.0990 - 0.0858 0.0874 0.0778
Internal 3B 0.0797 0.0865 0.0874 0.0895 0.0990
External 4-40 UNC 2A 0.0008 0.1061 0.1112 - 0.0925 0.0950 0.0814
Internal 2B 0.0849 0.0939 0.0958 0.0991 0.1120
External 4-40 UNC 3A 0.0000 0.1069 0.1120 - 0.0939 0.0958 0.0822
Internal 3B 0.0849 0.0939 0.0958 0.0982 0.1120
External 4-48 UNF 2A 0.0007 0.1068 0.1113 - 0.0954 0.0978 0.0864
Internal 2B 0.0894 0.0968 0.0985 0.1016 0.1120
External 4-48 UNF 3A 0.0000 0.1075 0.1120 - 0.0967 0.0985 0.0871
Internal 3B 0.0894 0.0968 0.0985 0.1008 0.1120
External 5-40 UNC 2A 0.0008 0.1191 0.1242 - 0.1054 0.1080 0.0944
Internal 2B 0.0979 0.1062 0.1088 0.1121 0.1250
External 5-40 UNC 3A 0.0000 0.1199 0.1250 - 0.1069 0.1088 0.0952
Internal 3B 0.0979 0.1062 0.1088 0.1113 0.1250
External 5-44 UNF 2A 0.0007 0.1195 0.1243 - 0.1070 0.1095 0.0972
Internal 2B 0.1004 0.1079 0.1102 0.1134 0.1250
External 5-44 UNF 3A 0.0000 0.1202 0.1250 - 0.1083 0.1102 0.0979
Internal 3B 0.1004 0.1079 0.1102 0.1126 0.1250
External 6-32 UNC 2A 0.0008 0.1312 0.1372 - 0.1141 0.1169 0.1000
Internal 2B 0.1040 0.1140 0.1177 0.1214 0.1380
External 6-32 UNC 3A 0.0000 0.1320 0.1380 - 0.1156 0.1177 0.1008
Internal 3B 0.1040 0.1140 0.1177 0.1204 0.1380
External 6-40 UNF 2A 0.0008 0.1321 0.1372 - 0.1184 0.1210 0.1074
Internal 2B 0.1110 0.1190 0.1218 0.1252 0.1380
External 6-40 UNF 3A 0.0000 0.1329 0.1380 - 0.1198 0.1218 0.1082
Internal 3B 0.1110 0.1186 0.1218 0.1243 0.1380
External 8-32 UNC 2A 0.0009 0.1571 0.1631 - 0.1399 0.1428 0.1259
Internal 2B 0.1300 0.1390 0.1437 0.1475 0.1640
External 8-32 UNC 3A 0.0000 0.1580 0.1640 - 0.1415 0.1437 0.1268
Internal 3B 0.1300 0.1389 0.1437 0.1465 0.1640
External 8-36 UNF 2A 0.0008 0.1577 0.1632 - 0.1424 0.1452 0.1301
Internal 2B 0.1340 0.1420 0.1460 0.1496 0.1640
External 8-36 UNF 3A 0.0000 0.1585 0.1640 - 0.1439 0.1460 0.1309
Internal 3B 0.1340 0.1416 0.1460 0.1487 0.1640
External 10-24 UNC 2A 0.0010 0.1818 0.1890 - 0.1586 0.1619 0.1394
Internal 2B 0.1450 0.1560 0.1629 0.1672 0.1900
External 10-24 UNC 3A 0.0000 0.1828 0.1900 - 0.1604 0.1629 0.1404
Internal 3B 0.1450 0.1555 0.1629 0.1661 0.1900
External 10-28 UNS 2A 0.0010 0.1825 0.1890 - 0.1625 0.1658 0.1464
Internal 2B 0.1510 0.1600 0.1668 0.1711 0.1900
External 10-32 UNF 2A 0.0009 0.1831 0.1891 - 0.1658 0.1688 0.1519
Internal 2B 0.1560 0.1640 0.1697 0.1736 0.1900
External 10-32 UNF 3A 0.0000 0.1840 0.1900 - 0.1674 0.1697 0.1528
Internal 3B 0.1560 0.1641 0.1697 0.1726 0.1900
External 10-36 UNS 2A 0.0009 0.1836 0.1891 - 0.1681 0.1711 0.1560
Internal 2B 0.1600 0.1660 0.1720 0.1759 0.1900
External 10-40 UNS 2A 0.0009 0.1840 0.1891 - 0.1700 0.1729 0.1592
Internal 2B 0.1630 0.1690 0.1738 0.1775 0.1900
External 10-48 UNS 2A 0.0008 0.1847 0.1892 - 0.1731 0.1757 0.1644
Internal 2B 0.1670 0.1720 0.1765 0.1799 0.1900
External 10-56 UNS 2A 0.0007 0.1852 0.1893 - 0.1752 0.1777 0.1681
Internal 2B 0.1710 0.1750 0.1784 0.1816 0.1900
External 12-24 UNC 2A 0.0010 0.2078 0.2150 - 0.1845 0.1879 0.1654
Internal 2B 0.1710 0.1810 0.1889 0.1933 0.2160
External 12-24 UNC 3A 0.0000 0.2088 0.2160 - 0.1863 0.1889 0.1664
Internal 3B 0.1710 0.1807 0.1889 0.1922 0.2160
External 12-28 UNF 2A 0.0010 0.2085 0.2150 - 0.1886 0.1918 0.1724
Internal 2B 0.1770 0.1860 0.1928 0.1970 0.2160
External 12-28 UNF 3A 0.0000 0.2095 0.2160 - 0.1904 0.1928 0.1734
Internal 3B 0.1770 0.1857 0.1928 0.1959 0.2160
External 12-32 UNEF 2A 0.0009 0.2091 0.2151 - 0.1917 0.1948 0.1779
Internal 2B 0.1820 0.1900 0.1957 0.1998 0.2160
External 12-32 UNEF 3A 0.0000 0.2100 0.2160 - 0.1933 0.1957 0.1788
Internal 3B 0.1820 0.1895 0.1957 0.1988 0.2160
External 12-36 UNS 2A 0.0009 0.2096 0.2151 - 0.1941 0.1971 0.1821
Internal 2B 0.1860 0.1920 0.1980 0.2019 0.2160
External 12-40 UNS 2A 0.0009 0.2100 0.2151 - 0.1960 0.1989 0.1835
Internal 2B 0.1890 0.1950 0.1998 0.2035 0.2160
External 12-48 UNS 2A 0.0008 0.2107 0.2152 - 0.1991 0.2017 0.1904
Internal 2B 0.1930 0.1980 0.2025 0.2059 0.2160
External 12-56 UNS 2A 0.0007 0.2112 0.2153 - 0.2012 0.2037 0.1941
Internal 2B 0.1970 0.2010 0.2044 0.2076 0.2160
External 1/4-20 UNC 1A 0.0011 0.2367 0.2489 - 0.2108 0.2164 0.1894
Internal 1B 0.1960 0.2070 0.2175 0.2248 0.2500
External 1/4-20 UNC 2A 0.0011 0.2408 0.2489 0.2367 0.2127 0.2164 0.1894
Internal 2B 0.1960 0.2070 0.2175 0.2224 0.2500
External 1/4-20 UNC 3A 0.0000 0.2419 0.2500 - 0.2147 0.2175 0.1905
Internal 3B 0.1960 0.2067 0.2175 0.2211 0.2500
External 1/4-24 UNS 2A 0.0011 0.2417 0.2489 - 0.2181 0.2218 0.1993
Internal 2B 0.2050 0.2150 0.2229 0.2277 0.2500
External 1/4-27 UNS 2A 0.0010 0.2423 0.2490 - 0.2214 0.2249 0.2049
Internal 2B 0.2100 0.2190 0.2259 0.2304 0.2500
External 1/4-28 UNF 1A 0.0010 0.2392 0.2490 - 0.2208 0.2258 0.2064
Internal 1B 0.2110 0.2200 0.2268 0.2333 0.2500
External 1/4-28 UNF 2A 0.0010 0.2425 0.2490 - 0.2225 0.2258 0.2064
Internal 2B 0.2110 0.2200 0.2268 0.2311 0.2500
External 1/4-28 UNF 3A 0.0000 0.2435 0.2500 - 0.2243 0.2268 0.2074
Internal 3B 0.2110 0.2190 0.2268 0.2300 0.2500
External 1/4-32 UNEF 2A 0.0010 0.2430 0.2490 - 0.2255 0.2287 0.2118
Internal 2B 0.2160 0.2240 0.2297 0.2339 0.2500
External 1/4-32 UNEF 3A 0.0000 0.2440 0.2500 - 0.2273 0.2297 0.2128
Internal 3B 0.2160 0.2229 0.2297 0.2328 0.2500
External 1/4-36 UNS 2A 0.0009 0.2436 0.2491 - 0.2280 0.2311 0.2161
Internal 2B 0.2200 0.2260 0.2320 0.2360 0.2500
External 1/4-40 UNS 2A 0.0009 0.2440 0.2491 - 0.2300 0.2329 0.2193
Internal 2B 0.2230 0.2290 0.2338 0.2376 0.2500
External 1/4-48 UNS 2A 0.0008 0.2447 0.2492 - 0.2330 0.2357 0.2243
Internal 2B 0.2270 0.2320 0.2365 0.2401 0.2500
External 1/4-56 UNS 2A 0.0008 0.2451 0.2492 - 0.2350 0.2376 0.2280
Internal 2B 0.2310 0.2350 0.2384 0.2417 0.2500
External 5/16-18 UNC 1A 0.0012 0.3113 0.2982 - 0.2752 0.2691 0.2452
Internal 1B 0.2650 0.2520 0.2843 0.2764 0.3125
External 5/16-18 UNC 2A 0.0012 0.3113 0.3026 0.2982 0.2752 0.2712 0.2452
Internal 2B 0.2650 0.2520 0.2817 0.2764 0.3125
External 5/16-18 UNC 3A 0.0000 0.3125 0.3038 - 0.2764 0.2734 0.2464
Internal 3B 0.2630 0.2520 0.2803 0.2764 0.3125
External 5/16-20 UN 2A 0.0012 0.3113 0.3032 - 0.2788 0.2748 0.2518
Internal 2B 0.2700 0.2580 0.2852 0.2800 0.3125
External 5/16-20 UN 3A 0.0000 0.3125 0.3044 - 0.2800 0.2770 0.2530
Internal 3B 0.2680 0.2580 0.2839 0.2800 0.3125
External 5/16-24 UNF 1A 0.0011 0.3114 0.3006 - 0.2843 0.2788 0.2618
Internal 1B 0.2770 0.2670 0.2925 0.2854 0.3125
External 5/16-24 UNF 2A 0.0011 0.3114 0.3042 - 0.2843 0.2806 0.2618
Internal 2B 0.2770 0.2670 0.2902 0.2854 0.3125
External 5/16-24 UNF 3A 0.0000 0.3125 0.3053 - 0.2854 0.2827 0.2629
Internal 3B 0.2754 0.2670 0.2890 0.2854 0.3125
External 5/16-27 UNS 2A 0.0010 0.3115 0.3048 - 0.2874 0.2839 0.2674
Internal 2B 0.2810 0.2720 0.2929 0.2884 0.3125
External 5/16-28 UN 2A 0.0010 0.3115 0.3050 - 0.2883 0.2849 0.2689
Internal 2B 0.2820 0.2740 0.2937 0.2893 0.3125
External 5/16-28 UN 3A 0.0000 0.3125 0.3060 - 0.2893 0.2867 0.2699
Internal 3B 0.2807 0.2740 0.2926 0.2893 0.3125
External 5/16-32 UNEF 2A 0.0010 0.3115 0.3055 - 0.2912 0.2880 0.2743
Internal 2B 0.2860 0.2790 0.2964 0.2922 0.3125
External 5/16-32 UNEF 3A 0.0000 0.3125 0.3065 - 0.2922 0.2898 0.2753
Internal 3B 0.2847 0.2790 0.2953 0.2922 0.3125
External 5/16-36 UNS 2A 0.0009 0.3116 0.3061 - 0.2936 0.2905 0.2785
Internal 2B 0.2890 0.2820 0.2985 0.2945 0.3125
External 5/16-40 UNS 2A 0.0009 0.3116 0.3065 - 0.2954 0.2925 0.2818
Internal 2B 0.2910 0.2850 0.3001 0.2963 0.3125
External 5/16-48 UNS 2A 0.0008 0.3117 0.3072 - 0.2982 0.2955 0.2869
Internal 2B 0.2950 0.2900 0.3026 0.2990 0.3125
External 3/8-16 UNC 1A 0.0013 0.3737 0.3595 - 0.3331 0.3266 0.2992
Internal 1B 0.3210 0.3070 0.3429 0.3344 0.3750
External 3/8-16 UNC 2A 0.0013 0.3737 0.3643 0.3595 0.3331 0.3287 0.2992
Internal 2B 0.3210 0.3070 0.3401 0.3344 0.3750
External 3/8-16 UNC 3A 0.0000 0.3750 0.3656 - 0.3344 0.3311 0.3005
Internal 3B 0.3182 0.3070 0.3387 0.3344 0.3750
External 3/8-18 UNS 2A 0.0013 0.3737 0.3650 - 0.3376 0.3333 0.3076
Internal 2B 0.3280 0.3150 0.3445 0.3389 0.3750
External 3/8-20 UN 2A 0.0012 0.3738 0.3657 - 0.3413 0.3372 0.3143
Internal 2B 0.3320 0.3210 0.3479 0.3425 0.3750
External 3/8-20 UN 3A 0.0000 0.3750 0.3669 - 0.3425 0.3394 0.3155
Internal 3B 0.3297 0.3210 0.3465 0.3425 0.3750
External 3/8-24 UNF 1A 0.0011 0.3739 0.3631 - 0.3468 0.3411 0.3243
Internal 1B 0.3400 0.3300 0.3553 0.3479 0.3750
External 3/8-24 UNF 2A 0.0011 0.3739 0.3667 - 0.3468 0.3430 0.3243
Internal 2B 0.3400 0.3300 0.3528 0.3479 0.3750
External 3/8-24 UNF 3A 0.0000 0.3750 0.3678 - 0.3479 0.3450 0.3254
Internal 3B 0.3372 0.3300 0.3516 0.3479 0.3750
External 3/8-27 UNS 2A 0.0011 0.3739 0.3672 - 0.3498 0.3462 0.3298
Internal 2B 0.3440 0.3350 0.3556 0.3509 0.3750
External 3/8-28 UN 2A 0.0011 0.3739 0.3674 - 0.3507 0.3471 0.3313
Internal 2B 0.3450 0.3360 0.3564 0.3518 0.3750
External 3/8-28 UN 3A 0.0000 0.3750 0.3685 - 0.3518 0.3491 0.3324
Internal 3B 0.3426 0.3360 0.3553 0.3518 0.3750
External 3/8-32 UNEF 2A 0.0010 0.3740 0.3680 - 0.3537 0.3503 0.3368
Internal 2B 0.3490 0.3410 0.3591 0.3547 0.3750
External 3/8-32 UNEF 3A 0.0000 0.3750 0.3690 - 0.3547 0.3522 0.3378
Internal 3B 0.3469 0.3410 0.3580 0.3547 0.3750
External 3/8-36 UNS 2A 0.0010 0.3740 0.3685 - 0.3560 0.3528 0.3409
Internal 2B 0.3520 0.3450 0.3612 0.3570 0.3750
External 3/8-40 UNS 2A 0.0009 0.3741 0.3690 - 0.3579 0.3548 0.3443
Internal 2B 0.3540 0.3480 0.3628 0.3588 0.3750
External 0.390-27 UNS 2A 0.0011 0.3889 0.3822 - 0.3648 0.3612 0.3448
Internal 2B 0.3590 0.3500 0.3706 0.3659 0.3900
External 7/16-14 UNC 1A 0.0014 0.4361 0.4206 - 0.3897 0.3826 0.3511
Internal 1B 0.3760 0.3600 0.4003 0.3911 0.4375
External 7/16-14 UNC 2A 0.0014 0.4361 0.4258 0.4206 0.3897 0.3850 0.3511
Internal 2B 0.3760 0.3600 0.3972 0.3911 0.4375
External 7/16-14 UNC 3A 0.0000 0.4375 0.4272 - 0.3911 0.3876 0.3525
Internal 3B 0.3717 0.3600 0.3957 0.3911 0.4375
External 7/16-16 UN 2A 0.0014 0.4361 0.4267 - 0.3955 0.3909 0.3616
Internal 2B 0.3840 0.3700 0.4028 0.3969 0.4375
External 7/16-16 UN 3A 0.0000 0.4375 0.4281 - 0.3969 0.3935 0.3630
Internal 3B 0.3800 0.3700 0.4014 0.3969 0.4375
External 7/16-18 UNS 2A 0.0013 0.4362 0.4275 - 0.4001 0.3958 0.3701
Internal 2B 0.3900 0.3770 0.4070 0.4014 0.4375
External 7/16-20 UNF 1A 0.0013 0.4362 0.4240 - 0.4037 0.3975 0.3767
Internal 1B 0.3950 0.3830 0.4131 0.4050 0.4375
External 7/16-20 UNF 2A 0.0013 0.4362 0.4281 - 0.4037 0.3995 0.3767
Internal 2B 0.3950 0.3830 0.4104 0.4050 0.4375
External 7/16-20 UNF 3A 0.0000 0.4375 0.4294 - 0.4050 0.4019 0.3780
Internal 3B 0.3916 0.3830 0.4091 0.4050 0.4375
External 7/16-24 UNS 2A 0.0011 0.4364 0.4292 - 0.4093 0.4055 0.3868
Internal 2B 0.4020 0.3920 0.4153 0.4104 0.4375
External 7/16-27 UNS 2A 0.0011 0.4364 0.4297 - 0.4123 0.4087 0.3923
Internal 2B 0.4060 0.3970 0.4181 0.4134 0.4375
External 7/16-28 UNEF 2A 0.0011 0.4364 0.4299 - 0.4132 0.4096 0.3838
Internal 2B 0.4070 0.3990 0.4189 0.4134 0.4375
External 7/16-28 UNEF 3A 0.0000 0.4375 0.4310 - 0.4143 0.4116 0.3949
Internal 3B 0.4051 0.3990 0.4178 0.4134 0.4375
External 7/16-32 UN 2A 0.0010 0.4365 0.4305 - 0.4162 0.4128 0.3993
Internal 2B 0.4110 0.4040 0.4216 0.4172 0.4375
External 7/16-32 UN 3A 0.0000 0.4375 0.4315 - 0.4172 0.4147 0.4003
Internal 3B 0.4094 0.4040 0.4205 0.4172 0.4375
External 1/2-12 UNS 2A 0.0016 0.4984 0.4870 - 0.4443 0.4389 0.3992
Internal 2B 0.4280 0.4100 0.4529 0.4459 0.5000
External 1/2-12 UNS 3A 0.0000 0.5000 0.4886 - 0.4459 0.4419 0.4008
Internal 3B 0.4223 0.4100 0.4511 0.4459 0.5000
External 1/2-13 UNC 1A 0.0015 0.4985 0.4822 - 0.4485 0.4411 0.4069
Internal 1B 0.4340 0.4170 0.4597 0.4500 0.5000
External 1/2-13 UNC 2A 0.0015 0.4985 0.4876 0.4822 0.4485 0.4435 0.4069
Internal 2B 0.4340 0.4170 0.4565 0.4500 0.5000
External 1/2-13 UNC 3A 0.0000 0.5000 0.4891 - 0.4500 0.4463 0.4084
Internal 3B 0.4284 0.4170 0.4548 0.4500 0.5000
External 1/2-14 UNS 2A 0.0015 0.4985 0.4882 - 0.4521 0.4471 0.4135
Internal 2B 0.4380 0.4230 0.4601 0.4536 0.5000
External 1/2-16 UN 2A 0.0000 0.4986 0.4892 - 0.4580 0.4533 0.4241
Internal 2B 0.4460 0.4320 0.4655 0.4594 0.5000
External 1/2-16 UN 3A 0.0000 0.5000 0.4906 - 0.4594 0.4559 0.4255
Internal 3B 0.4419 0.4320 0.4640 0.4594 0.5000
External 1/2-18 UNS 2A 0.0013 0.4987 0.4900 - 0.4626 0.4582 0.4326
Internal 2B 0.4530 0.4400 0.4697 0.4639 0.5000
External 1/2-20 UNF 1A 0.0013 0.4987 0.4865 - 0.4662 0.4392 0.4392
Internal 1B 0.4570 0.4460 0.4759 0.4675 0.5000
External 1/2-20 UNF 2A 0.0013 0.4987 0.4906 - 0.4662 0.4619 0.4392
Internal 2B 0.4570 0.4460 0.4731 0.4675 0.5000
External 1/2-20 UNF 3A 0.0000 0.5000 0.4919 - 0.4675 0.4643 0.4405
Internal 3B 0.4537 0.4460 0.4717 0.4675 0.5000
External 1/2-24 UNS 2A 0.0012 0.4988 0.4916 - 0.4717 0.4678 0.4492
Internal 2B 0.4650 0.4550 0.4780 0.4729 0.5000
External 1/2-27 UNS 2A 0.0011 0.4989 0.4922 - 0.4748 0.4711 0.4548
Internal 2B 0.4690 0.4600 0.4807 0.4759 0.5000
External 1/2-28 UNEF 2A 0.0011 0.4989 0.4924 - 0.4757 0.4720 0.4563
Internal 2B 0.4700 0.4610 0.4816 0.4768 0.5000
External 1/2-28 UNEF 3A 0.0000 0.5000 0.4935 - 0.4768 0.4740 0.4574
Internal 3B 0.4676 0.4610 0.4804 0.4768 0.5000
External 1/2-32 UN 2A 0.0010 0.4990 0.4930 - 0.4787 0.4752 0.4618
Internal 2B 0.4740 0.4660 0.4842 0.4797 0.5000
External 1/2-32 UN 3A 0.0000 0.5000 0.4940 - 0.4797 0.4771 0.4628
Internal 3B 0.4719 0.4660 0.4797 0.4831 0.5000
External 9/16-12 UNC 1A 0.0016 0.5609 0.5437 - 0.5068 0.4990 0.4617
Internal 1B 0.4900 0.4720 0.5186 0.5084 0.5625
External 9/16-12 UNC 2A 0.0016 0.5609 0.5495 0.5437 0.5068 0.5016 0.4617
Internal 2B 0.4900 0.4720 0.5152 0.5084 0.5625
External 9/16-12 UNC 3A 0.0000 0.5625 0.5511 - 0.5084 0.5045 0.4633
Internal 3B 0.4843 0.4720 0.5135 0.5084 0.5625
External 9/16-14 UNS 2A 0.0015 0.5610 0.5507 - 0.5146 0.5096 0.4760
Internal 2B 0.5010 0.4850 0.5226 0.5161 0.5625
External 9/16-16 UN 2A 0.0014 0.5611 0.5517 - 0.5205 0.5158 0.4866
Internal 2B 0.5090 0.4950 0.5280 0.5219 0.5625
External 9/16-16 UN 3A 0.0000 0.5625 0.5531 - 0.5219 0.5184 0.4880
Internal 3B 0.5040 0.4950 0.5265 0.5219 0.5625
External 9/16-18 UNF 1A 0.0014 0.5611 0.5480 - 0.5250 0.5182 0.4950
Internal 1B 0.5150 0.5020 0.5353 0.5264 0.5625
External 9/16-18 UNF 2A 0.0014 0.5611 0.5524 - 0.5250 0.5205 0.4950
Internal 2B 0.5150 0.5020 0.5323 0.5264 0.5625
External 9/16-18 UNF 3A 0.0000 0.5625 0.5538 - 0.5264 0.5230 0.4964
Internal 3B 0.5106 0.5020 0.5308 0.5264 0.5625
External 9/16-20 UN 2A 0.0013 0.5612 0.5531 - 0.5287 0.5245 0.5017
Internal 2B 0.5200 0.5080 0.5355 0.5300 0.5625
External 9/16-20 UN 3A 0.0000 0.5625 0.5544 - 0.5300 0.5268 0.5030
Internal 3B 0.5162 0.5080 0.5341 0.5300 0.5625
External 9/16-24 UNEF 2A 0.0012 0.5613 0.5541 - 0.5342 0.5303 0.5117
Internal 2B 0.5270 0.5170 0.5405 0.5354 0.5625
External 9/16-24 UNEF 3A 0.0000 0.5625 0.5553 - 0.5354 0.5325 0.5129
Internal 3B 0.5244 0.5170 0.5392 0.5354 0.5625
External 9/16-27 UNS 2A 0.0011 0.5614 0.5547 - 0.5373 0.5336 0.5173
Internal 2B 0.5310 0.5220 0.5432 0.5384 0.5625
External 9/16-28 UN 2A 0.0011 0.5614 0.5549 - 0.5382 0.5345 0.5188
Internal 2B 0.5320 0.5240 0.5441 0.5393 0.5625
External 9/16-28 UN 3A 0.0000 0.5625 0.5560 - 0.5393 0.5365 0.5199
Internal 3B 0.5301 0.5240 0.5429 0.5393 0.5625
External 9/16-32 UN 2A 0.0010 0.5615 0.5555 - 0.5412 0.5377 0.5243
Internal 2B 0.5360 0.5290 0.5467 0.5422 0.5625
External 9/16-32 UN 3A 0.0000 0.5625 0.5565 - 0.5422 0.5396 0.5253
Internal 3B 0.5344 0.5290 0.5456 0.5422 0.5625
External 5/8-11 UNC 1A 0.0016 0.6234 0.6052 - 0.5644 0.5561 0.5152
Internal 1B 0.5460 0.5270 0.5767 0.5660 0.6250
External 5/8-11 UNC 2A 0.0016 0.6234 0.6113 0.6052 0.5644 0.5589 0.5152
Internal 2B 0.5460 0.5270 0.5732 0.5660 0.6250
External 5/8-11 UNC 3A 0.0000 0.6250 0.6129 - 0.5660 0.5619 0.5168
Internal 3B 0.5391 0.5270 0.5714 0.5660 0.6250
External 5/8-12 UN 2A 0.0016 0.6234 0.6120 - 0.5693 0.5639 0.5242
Internal 2B 0.5530 0.5350 0.5780 0.5709 0.6250
External 5/8-12 UN 3A 0.0000 0.6250 0.6136 - 0.5709 0.5668 0.5258
Internal 3B 0.5463 0.5350 0.5762 0.5709 0.6250
External 5/8-14 UNS 2A 0.0015 0.6235 0.6132 - 0.5771 0.5720 0.5385
Internal 2B 0.5640 0.5480 0.5852 0.5786 0.6250
External 5/8-16 UN 2A 0.0014 0.6236 0.6142 - 0.5830 0.5782 0.5491
Internal 2B 0.5710 0.5570 0.5906 0.5844 0.6250
External 5/8-16 UN 3A 0.0000 0.6250 0.6156 - 0.5844 0.5808 0.5505
Internal 3B 0.5662 0.5570 0.5890 0.5844 0.6250
External 5/8-18 UNF 1A 0.0014 0.6236 0.6105 - 0.5875 0.5805 0.5575
Internal 1B 0.5780 0.5650 0.5980 0.5889 0.6250
External 5/8-18 UNF 2A 0.0014 0.6236 0.6149 - 0.5875 0.5828 0.5575
Internal 2B 0.5780 0.5650 0.5949 0.5889 0.6250
External 5/8-18 UNF 3A 0.0000 0.6250 0.6163 - 0.5889 0.5854 0.5589
Internal 3B 0.5730 0.5650 0.5934 0.5889 0.6250
External 5/8-18 UNF 3A 0.0000 0.6250 0.6163 - 0.5889 0.5854 0.5589
Internal 3B 0.5730 0.5650 0.5934 0.5889 0.6250
External 5/8-20 UN 2A 0.0013 0.6237 0.6156 - 0.5912 0.5869 0.5642
Internal 2B 0.5820 0.5710 0.5981 0.5925 0.6250
External 5/8-20 UN 3A 0.0000 0.6250 0.6169 - 0.5925 0.5893 0.5655
Internal 3B 0.5787 0.5710 0.5967 0.5925 0.6250
External 5/8-24 UNEF 2A 0.0012 0.6238 0.6166 - 0.5967 0.5927 0.5742
Internal 2B 0.5900 0.5800 0.6031 0.5979 0.6250
External 5/8-24 UNEF 3A 0.0000 0.6250 0.6178 - 0.5979 0.5949 0.5754
Internal 3B 0.5869 0.5800 0.6018 0.5979 0.6250
External 5/8-27 UNS 2A 0.0011 0.6239 0.6172 - 0.5998 0.5960 0.5798
Internal 2B 0.5940 0.5850 0.6059 0.6009 0.6250
External 5/8-28 UN 2A 0.0011 0.6239 0.6174 - 0.6007 0.5969 0.5813
Internal 2B 0.5950 0.5860 0.6067 0.6018 0.6250
External 5/8-28 UN 3A 0.0000 0.6250 0.6185 - 0.6018 0.5990 0.5824
Internal 3B 0.5926 0.5860 0.6055 0.6018 0.6250
External 5/8-32 UN 2A 0.0011 0.6239 0.6179 - 0.6036 0.6000 0.5867
Internal 2B 0.5990 0.5910 0.6093 0.6047 0.6250
External 5/8-32 UN 3A 0.0000 0.6250 0.6190 - 0.6047 0.6020 0.5878
Internal 3B 0.5969 0.5910 0.6082 0.6047 0.6250
External 11/16-12 UN 2A 0.0016 0.6859 0.6745 - 0.6318 0.6264 0.5867
Internal 2B 0.6150 0.5970 0.6405 0.6334 0.6875
External 11/16-12 UN 3A 0.0000 0.6875 0.6761 - 0.6334 0.6293 0.5883
Internal 3B 0.6085 0.5970 0.6387 0.6334 0.6875
External 11/16-16 UN 2A 0.0014 0.6861 0.6767 - 0.6455 0.6407 0.6116
Internal 2B 0.6340 0.6200 0.6531 0.6469 0.6875
External 11/16-16 UN 3A 0.0000 0.6875 0.6781 - 0.6469 0.6433 0.6130
Internal 3B 0.6284 0.6200 0.6515 0.6469 0.6875
External 11/16-20 UN 2A 0.0013 0.6862 0.6781 - 0.6537 0.6494 0.6267
Internal 2B 0.6450 0.6330 0.6606 0.6550 0.6875
External 11/16-20 UN 3A 0.0000 0.6875 0.6794 - 0.6550 0.6518 0.6280
Internal 3B 0.6412 0.6330 0.6592 0.6550 0.6875
External 11/16-24 UNEF 2A 0.0012 0.6863 0.6791 - 0.6592 0.6552 0.6367
Internal 2B 0.6520 0.6420 0.6656 0.6604 0.6875
External 11/16-24 UNEF 3A 0.0000 0.6875 0.6803 - 0.6604 0.6574 0.6379
Internal 3B 0.6494 0.6420 0.6643 0.6604 0.6875
External 11/16-28 UN 2A 0.0011 0.6864 0.6799 - 0.6632 0.6594 0.6438
Internal 2B 0.6570 0.6490 0.6692 0.6643 0.6875
External 11/16-28 UN 3A 0.0000 0.6875 0.6810 - 0.6643 0.6615 0.6449
Internal 3B 0.6551 0.6490 0.6680 0.6643 0.6875
External 11/16-32 UN 2A 0.0011 0.6864 0.6804 - 0.6661 0.6625 0.6492
Internal 2B 0.6610 0.6540 0.6718 0.6672 0.6875
External 11/16-32 UN 3A 0.0000 0.6875 0.6815 - 0.6672 0.6645 0.6503
Internal 3B 0.6594 0.6540 0.6707 0.6672 0.6875
External 3/4-10 UNC 1A 0.0018 0.7482 0.7288 - 0.6832 0.6744 0.6291
Internal 1B 0.6630 0.6420 0.6965 0.6850 0.7500
External 3/4-10 UNC 2A 0.0018 0.7482 0.7353 0.7288 0.6832 0.6773 0.6291
Internal 2B 0.6630 0.6420 0.6927 0.6850 0.7500
External 3/4-10 UNC 3A 0.0000 0.7500 0.7371 - 0.6850 0.6806 0.6309
Internal 3B 0.6545 0.6420 0.6907 0.6850 0.7500
External 3/4-12 UN 2A 0.0017 0.7483 0.7369 - 0.6942 0.6887 0.6491
Internal 2B 0.6780 0.6600 0.7031 0.6959 0.7500
External 3/4-12 UN 3A 0.0000 0.7500 0.7386 - 0.6959 0.6918 0.6508
Internal 3B 0.6707 0.6600 0.7103 0.6959 0.7500
External 3/4-14 UNS 2A 0.0015 0.7485 0.7382 - 0.7021 0.6970 0.6635
Internal 2B 0.6880 0.6730 0.7103 0.7036 0.7500
External 3/4-16 UNF 1A 0.0015 0.7485 0.7343 - 0.7079 0.7004 0.6740
Internal 1B 0.6960 0.6820 0.7192 0.7094 0.7500
External 3/4-16 UNF 2A 0.0015 0.7485 0.7391 - 0.7079 0.7029 0.6740
Internal 2B 0.6960 0.6820 0.7159 0.7094 0.7500
External 3/4-16 UNF 3A 0.0000 0.7500 0.7406 - 0.7094 0.7056 0.6755
Internal 3B 0.6908 0.6820 0.7143 0.7094 0.7500
External 3/4-18 UNS 2A 0.0014 0.7486 0.7399 - 0.7125 0.7079 0.6825
Internal 2B 0.7030 0.6900 0.7199 0.7139 0.7500
External 3/4-20 UNEF 2A 0.0013 0.7487 0.7406 - 0.7162 0.7118 0.6892
Internal 2B 0.7070 0.6960 0.7232 0.7175 0.7500
External 3/4-20 UNEF 3A 0.0000 0.7500 0.7419 - 0.7175 0.7142 0.6905
Internal 3B 0.7037 0.6960 0.7218 0.7175 0.7500
External 3/4-24 UNS 2A 0.0012 0.7488 0.7416 - 0.7217 0.7176 0.6992
Internal 2B 0.7150 0.7050 0.7282 0.7229 0.7500
External 3/4-27 UNS 2A 0.0012 0.7488 0.7421 - 0.7247 0.7208 0.7047
Internal 2B 0.7190 0.7100 0.7310 0.7259 0.7500
External 3/4-28 UN 2A 0.0012 0.7488 0.7423 - 0.7256 0.7218 0.7062
Internal 2B 0.7200 0.7110 0.7318 0.7268 0.7500
External 3/4-28 UN 3A 0.0000 0.7500 0.7435 - 0.7268 0.7239 0.7074
Internal 3B 0.7176 0.7110 0.7305 0.7268 0.7500
External 3/4-32 UN 2A 0.0011 0.7489 0.7429 - 0.7286 0.7250 0.7114
Internal 2B 0.7240 0.7160 0.7344 0.7297 0.7500
External 3/4-32 UN 3A 0.0000 0.7500 0.7440 - 0.7297 0.7270 0.7128
Internal 3B 0.7219 0.7160 0.7333 0.7297 0.7500
External 13/16-12 UN 2A 0.0017 0.8108 0.7994 - 0.7567 0.7512 0.7116
Internal 2B 0.7400 0.7220 0.7656 0.7584 0.8125
External 13/16-12 UN 3A 0.0000 0.8125 0.8011 - 0.7584 0.7543 0.7133
Internal 3B 0.7329 0.7220 0.7638 0.7584 0.8125
External 13/16-16 UN 2A 0.0015 0.8110 0.8016 - 0.7704 0.7655 0.7365
Internal 2B 0.7590 0.7450 0.7782 0.7719 0.8125
External 13/16-16 UN 3A 0.0000 0.8125 0.8031 - 0.7719 0.7683 0.7380
Internal 3B 0.7533 0.7450 0.7766 0.7719 0.8125
External 13/16-20 UNEF 2A 0.0013 0.8112 0.8031 - 0.7787 0.7743 0.7517
Internal 2B 0.7700 0.7580 0.7857 0.7800 0.8125
External 13/16-20 UNEF 3A 0.0000 0.8125 0.8044 - 0.7800 0.7767 0.7530
Internal 3B 0.7662 0.7580 0.7843 0.7800 0.8125
External 13/16-28 UN 2A 0.0012 0.8113 0.8048 - 0.7881 0.7843 0.7687
Internal 2B 0.7820 0.7740 0.7943 0.7893 0.8125
External 13/16-28 UN 3A 0.0000 0.8125 0.8060 - 0.7893 0.7864 0.7699
Internal 3B 0.7801 0.7740 0.7930 0.7893 0.8125
External 13/16-32 UN 2A 0.0011 0.8114 0.8054 - 0.7911 0.7875 0.7742
Internal 2B 0.7860 0.7790 0.7969 0.7922 0.8125
External 13/16-32 UN 3A 0.0000 0.8125 0.8065 - 0.7922 0.7895 0.7753
Internal 3B 0.7844 0.7790 0.7958 0.7922 0.8125
External 7/8-9 UNC 1A 0.0019 0.8731 0.8523 - 0.8009 0.7914 0.7408
Internal 1B 0.7780 0.7550 0.8151 0.8028 0.8750
External 7/8-9 UNC 2A 0.0019 0.8731 0.8592 0.8523 0.8009 0.7946 0.7408
Internal 2B 0.7780 0.7550 0.8110 0.8028 0.8750
External 7/8-9 UNC 3A 0.0000 0.8750 0.8611 - 0.8028 0.7981 0.7427
Internal 3B 0.7681 0.7550 0.8089 0.8028 0.8750
External 7/8-10 UNS 2A 0.0018 0.8732 0.8603 - 0.8082 0.8022 0.7542
Internal 2B 0.7880 0.7670 0.8178 0.8100 0.8750
External 7/8-12 UN 2A 0.0017 0.8733 0.8619 - 0.8192 0.8137 0.7741
Internal 2B 0.8030 0.7850 0.8281 0.8209 0.8750
External 7/8-12 UN 3A 0.0000 0.8750 0.8636 - 0.8209 0.8168 0.7758
Internal 3B 0.7948 0.7850 0.8263 0.8209 0.8750
External 7/8-14 UNF 1A 0.0016 0.8734 0.8579 - 0.8270 0.8189 0.7884
Internal 1B 0.8140 0.7980 0.8392 0.8286 0.8750
External 13/16-12 UN 2A 0.0017 0.8108 0.7994 - 0.7567 0.7512 0.7116
Internal 2B 0.7400 0.7220 0.7656 0.7584 0.8125
External 13/16-12 UN 3A 0.0000 0.8125 0.8011 - 0.7584 0.7543 0.7133
Internal 3B 0.7329 0.7220 0.7638 0.7584 0.8125
External 13/16-16 UN 2A 0.0015 0.8110 0.8016 - 0.7704 0.7655 0.7365
Internal 2B 0.7590 0.7450 0.7782 0.7719 0.8125
External 13/16-16 UN 3A 0.0000 0.8125 0.8031 - 0.7719 0.7683 0.7380
Internal 3B 0.7533 0.7450 0.7766 0.7719 0.8125
External 13/16-20 UNEF 2A 0.0013 0.8112 0.8031 - 0.7787 0.7743 0.7517
Internal 2B 0.7700 0.7580 0.7857 0.7800 0.8125
External 13/16-20 UNEF 3A 0.0000 0.8125 0.8044 - 0.7800 0.7767 0.7530
Internal 3B 0.7662 0.7580 0.7843 0.7800 0.8125
External 13/16-28 UN 2A 0.0012 0.8113 0.8048 - 0.7881 0.7843 0.7687
Internal 2B 0.7820 0.7740 0.7943 0.7893 0.8125
External 13/16-28 UN 3A 0.0000 0.8125 0.8060 - 0.7893 0.7864 0.7699
Internal 3B 0.7801 0.7740 0.7930 0.7893 0.8125
External 13/16-32 UN 2A 0.0011 0.8114 0.8054 - 0.7911 0.7875 0.7742
Internal 2B 0.7860 0.7790 0.7969 0.7922 0.8125
External 13/16-32 UN 3A 0.0000 0.8125 0.8065 - 0.7922 0.7895 0.7753
Internal 3B 0.7844 0.7790 0.7958 0.7922 0.8125
External 7/8-9 UNC 1A 0.0019 0.8731 0.8523 - 0.8009 0.7914 0.7408
Internal 1B 0.7780 0.7550 0.8151 0.8028 0.8750
External 7/8-9 UNC 2A 0.0019 0.8731 0.8592 0.8523 0.8009 0.7946 0.7408
Internal 2B 0.7780 0.7550 0.8110 0.8028 0.8750
External 7/8-9 UNC 3A 0.0000 0.8750 0.8611 - 0.8028 0.7981 0.7427
Internal 3B 0.7681 0.7550 0.8089 0.8028 0.8750
External 7/8-10 UNS 2A 0.0018 0.8732 0.8603 - 0.8082 0.8022 0.7542
Internal 2B 0.7880 0.7670 0.8178 0.8100 0.8750
External 7/8-12 UN 2A 0.0017 0.8733 0.8619 - 0.8192 0.8137 0.7741
Internal 2B 0.8030 0.7850 0.8281 0.8209 0.8750
External 7/8-12 UN 3A 0.0000 0.8750 0.8636 - 0.8209 0.8168 0.7758
Internal 3B 0.7948 0.7850 0.8263 0.8209 0.8750
External 7/8-14 UNF 1A 0.0016 0.8734 0.8579 - 0.8270 0.8189 0.7884
Internal 1B 0.8140 0.7980 0.8392 0.8286 0.8750
External 7/8-14 UNF 2A 0.0016 0.8734 0.8631 - 0.8270 0.8216 0.7884
Internal 2B 0.8140 0.7980 0.8356 0.8286 0.8750
External 7/8-14 UNF 3A 0.0000 0.8750 0.8647 - 0.8286 0.8245 0.7900
Internal 3B 0.8068 0.7980 0.8339 0.8286 0.8750
External 7/8-16 UN 2A 0.0015 0.8735 0.8641 - 0.8329 0.8280 0.7900
Internal 2B 0.8210 0.8070 0.8407 0.8344 0.8750
External 7/8-16 UN 3A 0.0000 0.8750 0.8656 - 0.8344 0.8308 0.8005
Internal 3B 0.8158 0.8070 0.8391 0.8344 0.8750
External 7/8-18 UNS 2A 0.0014 0.8736 0.8649 - 0.8375 0.8329 0.8075
Internal 2B 0.8280 0.8150 0.8449 0.8389 0.8750
External 7/8-20 UNEF 2A 0.0013 0.8737 0.8656 - 0.8412 0.8368 0.8142
Internal 2B 0.8320 0.8210 0.8482 0.8425 0.8750
External 7/8-20 UNEF 3A 0.0000 0.8750 0.8669 - 0.8425 0.8392 0.8155
Internal 3B 0.8287 0.8210 0.8468 0.8425 0.8750
External 7/8-24 UNS 2A 0.0012 0.8738 0.8666 - 0.8467 0.8426 0.8242
Internal 2B 0.8400 0.8300 0.8532 0.8479 0.8750
External 7/8-27 UNS 2A 0.0012 0.8738 0.8671 - 0.8497 0.8458 0.8297
Internal 2B 0.8440 0.8350 0.8560 0.8509 0.8750
External 7/8-28 UN 2A 0.0012 0.8738 0.8673 - 0.8506 0.8468 0.8312
Internal 2B 0.8450 0.8360 0.8568 0.8518 0.8750
External 7/8-28 UN 3A 0.0000 0.8750 0.8685 - 0.8518 0.8489 0.8324
Internal 3B 0.8426 0.8360 0.8555 0.8518 0.8750
External 7/8-32 UN 2A 0.0011 0.8739 0.8679 - 0.8536 0.8500 0.8367
Internal 2B 0.8490 0.8410 0.8594 0.8547 0.8750
External 7/8-32 UN 3A 0.0000 0.8750 0.8690 - 0.8547 0.8520 0.8378
Internal 3B 0.8469 0.8410 0.8583 0.8547 0.8750
External 15/16-12 UN 2A 0.0017 0.9358 0.9244 - 0.8817 0.8760 0.8366
Internal 2B 0.8650 0.8470 0.8908 0.8834 0.9375
External 15/16-12 UN 3A 0.0000 0.9375 0.9261 - 0.8834 0.8793 0.8383
Internal 3B 0.8575 0.8470 0.8889 0.8834 0.9375
External 15/16-16 UN 2A 0.0015 0.9360 0.9266 - 0.8954 0.8904 0.8615
Internal 2B 0.8840 0.8700 0.9034 0.8969 0.9375
External 15/16-16 UN 3A 0.0000 0.9375 0.9281 - 0.8969 0.8932 0.8630
Internal 3B 0.8783 0.8700 0.9018 0.8969 0.9375
External 15/16-20 UNEF 2A 0.0014 0.9361 0.9280 - 0.9036 0.8991 0.8766
Internal 2B 0.8950 0.8830 0.9109 0.9050 0.9375
External 15/16-20 UNEF 3A 0.0000 0.9375 0.9294 - 0.9050 0.9016 0.8780
Internal 3B 0.8912 0.8830 0.9094 0.9050 0.9375
External 15/16-28 UN 2A 0.0012 0.9363 0.9298 - 0.9131 0.9091 0.8937
Internal 2B 0.9070 0.8990 0.9195 0.9143 0.9375
External 15/16-28 UN 3A 0.0000 0.9375 0.9310 - 0.9143 0.9113 0.8949
Internal 3B 0.9051 0.8990 0.9182 0.9143 0.9375
External 15/16-32 UN 2A 0.0011 0.9364 0.9304 - 0.9161 0.9123 0.8992
Internal 2B 0.9110 0.9040 0.9221 0.9172 0.9375
External 15/16-32 UN 3A 0.0000 0.9375 0.9315 - 0.9172 0.9144 0.9003
Internal 3B 0.9094 0.9040 0.9209 0.9172 0.9375
External 1-8 UNC 1A 0.0020 0.9980 0.9755 - 0.9168 0.9067 0.8492
Internal 1B 0.8900 0.8650 0.9320 0.9188 1.0000
External 1-8 UNC 2A 0.0020 0.9980 0.9830 0.9755 0.9168 0.9100 0.8492
Internal 2B 0.8900 0.8650 0.9276 0.9188 1.0000
External 1-8 UNC 3A 0.0000 1.0000 0.9850 - 0.9188 0.9137 0.8512
Internal 3B 0.8797 0.8650 0.9254 0.9188 1.0000
External 1-10 UNS 2A 0.0018 0.9982 0.9853 - 0.9332 0.9270 0.8792
Internal 2B 0.9130 0.8920 0.9430 0.9350 1.0000
External 1-12 UNF 1A 0.0018 0.9982 0.9810 - 0.9441 0.9353 0.8990
Internal 1B 0.9280 0.9100 0.9573 0.9459 1.0000
External 1-12 UNF 2A 0.0018 0.9982 0.9868 - 0.9441 0.9382 0.8990
Internal 2B 0.9280 0.9100 0.9535 0.9459 1.0000
External 1-12 UNF 3A 0.0000 1.0000 0.9886 - 0.9459 0.9415 0.9008
Internal 3B 0.9198 0.9100 0.9516 0.9459 1.0000
External 1-14UNS 1A 0.0017 0.9983 0.9828 - 0.9519 0.9435 0.9132
Internal 1B 0.9380 0.9230 0.9645 0.9536 1.0000
External 1-14UNS 2A 0.0017 0.9983 0.9880 - 0.9519 0.9463 0.9132
Internal 2B 0.9380 0.9230 0.9609 0.9536 1.0000
External 1-14UNS 3A 0.0000 1.0000 0.9897 - 0.9536 0.9494 0.9149
Internal 3B 0.9315 0.9230 0.9590 0.9536 1.0000
External 1-16 UN 2A 0.0015 0.9985 0.9891 - 0.9579 0.9529 0.9240
Internal 2B 0.9460 0.9320 0.9659 0.9594 1.0000
External 1-16 UN 3A 0.0000 1.0000 0.9906 - 0.9594 0.9557 0.9255
Internal 3B 0.9408 0.9320 0.9643 0.9594 1.0000
External 1-18 UNS 2A 0.0014 0.9986 0.9899 - 0.9625 0.9578 0.9325
Internal 2B 0.9530 0.9400 0.9701 0.9639 1.0000
External 1-20 UNEF 2A 0.0014 0.9986 0.9905 - 0.9661 0.9616 0.9391
Internal 2B 0.9570 0.9460 0.9734 0.9675 1.0000
External 1-20 UNEF 3A 0.0000 1.0000 0.9919 - 0.9675 0.9641 0.9405
Internal 3B 0.9537 0.9460 0.9719 0.9675 1.0000
External 1-24 UNS 2A 0.0013 0.9987 0.9915 - 0.9716 0.9674 0.9491
Internal 2B 0.9650 0.9550 0.9784 0.9729 1.0000
External 1-27 UNS 2A 0.0012 0.9988 0.9921 - 0.9747 0.9707 0.9547
Internal 2B 0.9690 0.9600 0.9811 0.9759 1.0000
External 1-28 UN 2A 0.0012 0.9988 0.9923 - 0.9756 0.9716 0.9562
Internal 2B 0.9700 0.9610 0.9820 0.9768 1.0000
External 1-28 UN 3A 0.0000 1.0000 0.9935 - 0.9768 0.9738 0.9574
Internal 3B 0.9676 0.9610 0.9807 0.9768 1.0000
External 1-32 UN 2A 0.0011 0.9989 0.9929 - 0.9786 0.9748 0.9617
Internal 2B 0.9740 0.9660 0.9846 0.9797 1.0000
External 1-32 UN 3A 0.0000 1.0000 0.9940 - 0.9797 0.9769 0.9628
Internal 3B 0.9719 0.9660 0.9834 0.9797 1.0000
External 11/16-8 UN 2A 0.0020 1.0605 1.0455 - 0.9793 0.9725 0.9117
Internal 2B 0.9520 0.9270 0.9902 0.9813 1.0625
External 11/16-8 UN 3A 0.0000 1.0625 1.0475 - 0.9813 0.9762 0.9137
Internal 3B 0.9422 0.9270 0.9880 0.9813 1.0625
External 11/16-12 UN 2A 0.0017 1.0608 1.0494 - 1.0067 1.0010 0.9616
Internal 2B 0.9900 0.9720 1.0158 1.0084 1.0625
External 11/16-12 UN 3A 0.0000 1.0625 1.0511 - 1.0084 1.0042 0.9633
Internal 3B 0.9823 0.9720 1.0139 1.0084 1.0625
External 11/16-16 UN 2A 0.0015 1.0610 1.0516 - 1.0204 1.0154 0.9865
Internal 2B 1.0090 0.9950 1.0284 1.0219 1.0625
External 11/16-16 UN 3A 0.0000 1.0625 1.0531 - 1.0219 1.0182 0.9880
Internal 3B 1.0033 0.9950 1.0268 1.0264 1.0625
External 11/16-18 UNEF 2A 0.0014 1.0611 1.0524 - 1.0250 1.0203 0.9950
Internal 2B 1.0150 1.0020 1.0326 1.0264 1.0625
External 11/16-18 UNEF 3A 0.0000 1.0625 1.0538 - 1.0264 1.0228 0.9964
Internal 3B 1.0105 1.0020 1.0310 1.0264 1.0625
External 11/16-20 UN 2A 0.0014 1.0611 1.0530 - 1.0286 1.0241 1.0016
Internal 2B 1.0200 1.0080 1.0359 1.0300 1.0625
External 11/16-20 UN 3A 0.0000 1.0625 1.0544 - 1.0300 1.0266 1.0030
Internal 3B 1.0162 1.0080 1.0344 1.0300 1.0625
External 11/16-28 UN 2A 0.0012 1.0613 1.0548 - 1.0381 1.0341 1.0187
Internal 2B 1.0320 1.0240 1.0445 0.0393 1.0625
External 11/16-28 UN 3A 0.0000 1.0625 0.0560 - 1.0393 1.0363 1.0199
Internal 3B 1.0301 1.0240 1.0432 1.0393 1.0625
External 11/8-7 UNC 1A 0.0022 1.1228 1.0982 - 1.0300 1.0191 0.9527
Internal 1B 0.9980 0.9700 1.0416 1.0322 1.1250
External 11/8-7 UNC 2A 0.0022 1.1228 1.1064 1.0982 1.0300 1.0228 0.9527
Internal 2B 0.9980 0.9700 1.0393 1.0322 1.1250
External 11/8-7 UNC 3A 0.0000 1.1250 1.1086 - 1.0322 1.0268 0.9549
Internal 3B 0.9875 0.9700 0.9645 1.0322 1.1250
External 11/8-8 UN 2A 0.0021 1.1229 1.1079 1.1004 1.0417 1.0348 0.9741
Internal 2B 1.0150 0.9900 1.0528 1.0438 1.1250
External 11/8-8 UN 3A 0.0000 1.1250 1.1100 - 1.0438 1.0386 0.9762
Internal 3B 1.0047 0.9900 1.0505 1.0438 1.1250
External 11/8-10 UNS 2A 0.0018 1.1232 1.1103 - 1.0582 1.0520 1.0042
Internal 2B 1.0380 1.0170 1.0680 1.0600 1.1250
External 11/8-12 UNF 1A 0.0018 1.1232 1.1060 - 1.0691 1.0601 1.0240
Internal 1B 1.0530 1.0350 1.0826 1.0709 1.1250
External 11/8-12 UNF 2A 0.0018 1.1232 1.1118 - 1.0691 1.0631 1.0240
Internal 2B 1.0530 1.0350 1.0787 1.0709 1.1250
External 11/8-12 UNF 3A 0.0000 1.1250 1.1136 - 1.0709 1.0664 1.0258
Internal 3B 1.0448 1.0350 1.0768 1.0709 1.1250
External 11/8-14 UNS 2A 0.0016 1.1234 1.1131 - 1.0770 1.0717 1.0384
Internal 2B 1.0640 1.0480 1.0855 1.0786 1.1250
External 11/8-16 UN 2A 0.0015 1.1235 1.1141 - 1.0829 1.0779 1.0490
Internal 2B 1.0710 1.0570 1.0909 1.0844 1.1250
External 11/8-16 UN 3A 0.0000 1.1250 1.1156 - 1.0844 1.0807 1.0505
Internal 2B 1.0658 1.0570 1.0893 1.0844 1.1250
External 11/8-18 UNEF 2A 0.0014 1.1236 1.1149 - 1.0875 1.0828 1.0575
Internal 2B 1.0780 1.0650 1.0951 1.0889 1.1250
External 11/8-18 UNEF 3A 0.0000 1.1250 1.1163 - 1.0889 1.0853 1.0589
Internal 3B 1.0730 1.0650 1.0935 1.0889 1.1250
External 11/8-20 UN 2A 0.0014 1.1236 1.1155 - 1.0911 1.0866 1.0641
Internal 2B 1.0820 1.0710 1.0984 1.0925 1.1250
External 11/8-20 UN 3A 0.0000 1.1250 1.1169 - 1.0925 1.0891 1.0655
Internal 3B 1.0787 1.0710 1.0969 1.0925 1.1250
External 11/8-24 UNS 2A 0.0013 1.1237 1.1165 - 1.0966 1.0924 1.0742
Internal 2B 1.0900 1.0800 1.1034 1.0979 1.1250
External 11/8-28 UN 2A 0.0012 1.1238 1.1173 - 1.1006 1.0966 1.0812
Internal 2B 1.0950 1.0860 1.1070 1.1018 1.1250
External 11/8-28 UN 3A 0.0000 1.1250 1.1185 - 1.1018 1.0988 1.0824
Internal 3B 1.0926 1.0860 1.1057 1.1018 1.1250
External 13/16-8 UN 2A 0.0021 1.1854 1.1704 - 1.1042 1.0972 1.0366
Internal 2B 1.0770 1.0520 1.1154 1.1063 1.1875
External 13/16-8 UN 3A 0.0000 1.1875 1.1725 - 1.1063 1.1011 1.0387
Internal 3B 1.0672 1.0520 1.1131 1.1063 1.1875
External 13/16-12 UN 2A 1.0017 1.1858 1.1744 - 1.1317 1.1259 1.0866
Internal 2B 1.1150 1.0970 1.1409 1.1334 1.1875
External 13/16-12 UN 3A 0.0000 1.1872 1.1761 - 1.1334 1.1291 1.0883
Internal 3B 1.1073 1.0970 1.1390 1.1334 1.1875
External 13/16-16 UN 2A 0.0015 1.1860 1.1766 - 1.1454 1.1403 1.1115
Internal 2B 1.1340 1.1200 1.1535 1.1469 1.1875
External 13/16-16 UN 3A 0.0000 1.1875 1.1781 - 1.1469 1.1431 1.1130
Internal 3B 1.1283 1.1200 1.1519 1.1469 1.1875
External 13/16-18 UNEF 2A 0.0015 1.1860 1.1773 - 1.1499 1.1450 1.1199
Internal 2B 1.1400 1.1270 1.1577 1.1514 1.1875
External 13/16-18 UNEF 3A 0.0000 1.1875 1.1788 - 1.1514 1.1478 1.1214
Internal 3B 1.1355 1.1270 1.1561 1.1514 1.1875
External 13/16-20 UN 2A 0.0014 1.1861 1.1780 - 1.1536 1.1489 1.1266
Internal 2B 1.1450 1.1330 1.1611 1.1550 1.1875
External 13/16-20 UN 3A 0.0000 1.1875 1.1794 - 1.1550 1.1515 1.1280
Internal 3B 1.1412 1.1330 1.1595 1.1550 1.1875
External 13/16-28 UN 2A 0.0012 1.1863 1.1798 - 1.1631 1.1590 1.1437
Internal 2B 1.1570 1.1490 1.1696 1.1643 1.1875
External 13/16-28 UN 3A 0.0000 1.1875 1.1810 - 1.1643 0.1612 1.1449
Internal 3B 1.1551 1.1490 1.1683 1.1643 1.1875
External 11/4-7 UNC 1A 0.0022 1.2478 1.2232 - 1.1550 1.1439 1.0777
Internal 1B 1.1230 1.0950 1.1716 1.1572 1.2500
External 11/4-7 UNC 2A 0.0022 1.2478 1.2314 1.2232 1.1550 1.1476 1.0777
Internal 2B 1.1230 1.0950 1.1668 1.1572 1.2500
External 11/4-7 UNC 3A 0.0000 1.2500 1.2336 - 1.1572 1.1517 1.0799
Internal 3B 1.1125 1.0950 1.1644 1.1572 1.2500
External 11/4-8 UN 2A 0.0021 1.2479 1.2329 1.2254 1.1667 1.1597 1.0991
Internal 2B 1.1400 1.1150 1.1780 1.1688 1.2500
External 11/4-8 UN 3A 0.0000 1.2500 1.2350 - 1.1688 1.1635 1.1012
Internal 3B 1.1297 1.1150 1.1757 1.1688 1.2500
External 11/4-10 UNS 2A 0.0019 1.2481 1.2352 - 1.1831 1.1768 1.1291
Internal 2B 1.1630 1.1420 1.1932 1.1850 1.2500
External 11/4-12 UNF 1A 0.0018 1.2482 1.2310 - 1.1941 1.1849 1.1490
Internal 1B 1.1780 1.1600 1.2079 1.1959 1.2500
External 11/4-12 UNF 2A 0.0018 1.2482 1.2368 - 1.1941 1.1879 1.1490
Internal 2B 1.1780 1.1600 1.2039 1.1959 1.2500
External 11/4-12 UNF 3A 0.0000 1.2500 1.2386 - 1.1959 1.1913 1.1508
Internal 3B 1.1698 1.1600 1.2019 1.1959 1.2500
External 11/4-14 UNS 2A 0.0016 1.2484 1.2381 - 1.2020 1.1966 1.1634
Internal 2B 1.1880 1.1730 1.2106 1.2036 1.2500
External 11/4-16 UN 2A 0.0015 1.2485 1.2391 - 1.2079 1.2028 1.1740
Internal 2B 1.1960 1.1820 1.2160 1.2094 1.2500
External 11/4-16 UN 3A 0.0000 1.2500 1.2406 - 1.2094 1.2056 1.1755
Internal 3B 1.1908 1.1820 1.2144 1.2094 1.2500
External 11/4-18 UNEF 2A 0.0015 1.2485 1.2398 - 1.2124 1.2075 1.1824
Internal 2B 1.2030 1.1900 1.2202 1.2139 1.2500
External 11/4-18 UNEF 3A 0.0000 1.2500 1.2413 - 1.2139 1.2103 1.1839
Internal 3B 1.1980 1.1900 1.2186 1.2139 1.2500
External 11/4-20 UN 2A 0.0014 1.2486 1.2405 - 1.2161 1.2114 1.1891
Internal 2B 1.2070 1.1960 1.2236 1.2175 1.2500
External 11/4-20 UN 3A 0.0000 1.2500 1.2419 - 1.2175 1.2140 1.1905
Internal 3B 1.2037 1.1960 1.2220 1.2175 1.2500
External 11/4-24 UNS 2A 0.0013 1.2487 1.2415 - 1.2216 1.2173 1.1991
Internal 2B 1.2150 1.2050 1.2285 1.2229 1.2500
External 11/4-28 UN 2A 0.0012 1.2488 1.2423 - 1.2256 1.2215 1.2062
Internal 2B 1.2200 1.2110 1.2321 1.2268 1.2500
External 11/4-28 UN 3A 0.0000 1.2435 1.2435 - 1.2268 1.2237 1.2074
Internal 3B 1.2176 1.2110 1.2308 1.2268 1.2500
External 15/16-8 UN 2A 0.0021 1.3104 1.2954 - 1.2292 1.2221 1.1616
Internal 2B 1.2020 1.1770 1.2405 1.2313 1.3125
External 15/16-8 UN 3A 0.0000 1.3125 1.2975 - 1.2313 1.2260 1.1637
Internal 3B 1.1922 1.1770 1.2382 1.2313 1.3125
External 15/16-12 UN 2A 0.0017 1.3108 1.2994 - 1.2567 1.2509 1.2116
Internal 2B 1.2400 1.2220 1.2659 1.2584 1.3125
External 15/16-12 UN 3A 0.0000 1.3125 1.3011 - 1.2584 1.2541 1.2133
Internal 3B 1.2323 1.2220 1.2640 1.2584 1.3125
External 15/16-16 UN 2A 0.0015 1.3110 1.3016 - 1.2704 1.2653 1.2365
Internal 2B 1.2590 1.2450 1.2785 1.2719 1.3125
External 15/16-16 UN 3A 0.0000 1.3125 1.3031 - 1.2719 1.2681 1.2380
Internal 3B 1.2533 1.2450 1.2769 1.2719 1.3125
External 15/16-18 UNEF 2A 0.0015 1.3110 1.3023 - 1.2749 1.2700 1.2449
Internal 2B 1.2650 1.2520 1.2827 1.2764 1.3125
External 15/16-18 UNEF 3A 0.0000 1.3125 1.3038 - 1.2764 1.2728 1.2464
Internal 3B 1.2605 1.2520 1.2811 1.2764 1.3125
External 15/16-20 UN 2A 0.0014 1.3111 1.3030 - 1.2786 1.2739 1.2516
Internal 2B 1.2700 1.2580 1.2861 1.2800 1.3125
External 15/16-20 UN 3A 0.0000 1.3125 1.3044 - 1.2800 1.2765 1.2530
Internal 3B 1.2662 1.2580 1.2845 1.2800 1.3125
External 15/16-28 UN 2A 0.0012 1.3113 1.3048 - 1.2881 1.2840 1.2687
Internal 2B 1.2820 1.2740 1.2946 1.2893 1.3125
External 15/16-28 UN 3A 0.0000 1.3125 1.3060 - 1.2893 1.2862 1.2699
Internal 3B 1.2801 1.2740 1.2933 1.2893 1.3125
External 13/8-6 UNC 1A 0.0024 1.3726 1.3453 - 1.2643 1.2523 1.1742
Internal 1B 1.2250 1.1950 1.2822 1.2667 1.3750
External 13/8-6 UNC 2A 0.0024 1.3726 1.3544 1.3453 1.2643 1.2563 1.1742
Internal 2B 1.2250 1.1950 1.2771 1.2667 1.3750
External 13/8-6 UNC 3A 0.0000 1.3750 1.3568 - 1.2667 1.2607 1.1766
Internal 3B 1.2146 1.1950 1.2745 1.2667 1.3750
External 13/8-8 UN 2A 0.0022 1.3728 1.3578 1.3503 1.2916 1.2844 1.2240
Internal 2B 1.2650 1.2400 1.3031 1.2938 1.3750
External 13/8-8 UN 3A 0.0000 1.3750 1.3600 - 1.2938 1.2884 1.2262
Internal 3B 1.2547 1.2400 1.3008 1.2938 1.3750
External 13/8-10 UNS 2A 0.0019 1.3731 1.3602 - 1.3081 1.3018 1.2541
Internal 2B 1.2880 1.2670 1.3182 1.3100 1.3750
External 13/8-12 UNF 1A 0.0019 1.3731 1.3559 - 1.3190 1.3096 1.2739
Internal 1B 1.3030 1.2850 1.3332 1.3209 1.3750
External 13/8-12 UNF 2A 0.0019 1.3731 1.3617 - 1.3190 1.3127 1.2739
Internal 2B 1.3030 1.2850 1.3291 1.3209 1.3750
External 13/8-12 UNF 3A 0.0000 1.3750 1.3636 - 1.3209 1.3162 1.2758
Internal 3B 1.2948 1.2850 1.3270 1.3209 1.3750
External 13/8-14 UNS 2A 0.0016 1.3734 1.3631 - 1.3270 1.3216 1.2884
Internal 2B 1.3140 1.2980 1.3356 1.3286 1.3750
External 13/8-16 UN 2A 0.0015 1.3735 1.3641 - 1.3329 1.3278 1.2990
Internal 2B 1.3210 1.3070 1.3410 1.3344 1.3750
External 13/8-16 UN 3A 0.0000 1.3750 1.3656 - 1.3344 1.3306 1.3005
Internal 3B 1.3158 1.3070 1.3394 1.3344 1.3750
External 13/8-18 UNEF 2A 0.0015 1.3735 1.3648 - 1.3374 1.3325 1.3074
Internal 2B 1.3280 1.3150 1.3452 1.3389 1.3750
External 13/8-18 UNEF 3A 0.0000 1.3750 1.3663 - 1.3389 1.3353 1.3089
Internal 3B 1.3230 1.3150 1.3436 1.3389 1.3750
External 13/8-20 UN 2A 0.0014 1.3736 1.3655 - 1.3411 1.3364 1.3141
Internal 2B 1.3320 1.3210 1.3486 1.3425 1.3750
External 13/8-20 UN 3A 0.0000 1.3750 1.3669 - 1.3425 1.3390 1.3155
Internal 3B 1.3287 1.3210 1.3470 1.3425 1.3750
External 13/8-24 UNS 2A 0.0013 1.3737 1.3665 - 1.3466 1.3423 1.3241
Internal 2B 1.3400 1.3300 1.3535 1.3479 1.3750
External 13/8-28 UN 2A 0.0012 1.3738 1.3673 - 1.3506 1.3465 1.3312
Internal 2B 1.3450 1.3360 1.3571 1.3518 1.3750
External 13/8-28 UN 3A 0.0000 1.3750 1.3685 - 1.3518 1.3487 1.3324
Internal 3B 1.3426 1.3360 1.3558 1.3518 1.3750
External 17/16-6 UN 2A 0.0024 1.4351 1.4169 - 1.3268 1.3188 1.2367
Internal 2B 1.2880 1.2570 1.3396 1.3292 1.4375
External 17/16-6 UN 3A 0.0000 1.4375 1.4193 - 1.3292 1.3232 1.2391
Internal 3B 1.2771 1.2570 1.3370 1.3292 1.4375
External 17/16-8 UN 2A 0.0022 1.4353 1.4203 - 1.3541 1.3469 1.2865
Internal 2B 1.3270 1.3020 1.3657 1.3563 1.4375
External 17/16-8 UN 3A 0.0000 1.4375 1.4225 - 1.3563 1.3509 1.2887
Internal 3B 1.3172 1.3020 1.3634 1.3563 1.4375
External 17/16-12 UN 2A 0.0018 1.4357 1.4243 - 1.3816 1.3757 1.3365
Internal 2B 1.3650 1.3470 1.3910 1.3834 1.4375
External 17/16-12 UN 3A 0.0000 1.4375 1.4261 - 1.3834 1.3790 1.3383
Internal 3B 1.3573 1.3470 1.3891 1.3834 1.4375
External 17/16-16 UN 2A 0.0016 1.4359 1.4265 - 1.3953 1.3901 1.3614
Internal 2B 1.3840 1.3700 1.4037 1.3969 1.4375
External 17/16-16 UN 3A 0.0000 1.4375 1.4281 - 1.3969 1.3930 1.3630
Internal 3B 1.3783 1.3700 1.4020 1.3969 1.4375
External 17/16-18 UNEF 2A 0.0015 1.4360 1.4273 - 1.3999 1.3949 1.3699
Internal 2B 1.3900 1.3770 1.4079 1.4014 1.4375
External 17/16-18 UNEF 3A 0.0000 1.4375 1.4288 - 1.4014 1.3977 1.3714
Internal 3B 1.3855 1.3770 1.4062 1.4014 1.4375
External 17/16-20 UN 2A 0.0014 1.4361 1.4280 - 1.4036 1.3988 1.3766
Internal 2B 1.3950 1.3830 1.4112 1.4050 1.4375
External 17/16-20 UN 3A 0.0000 1.4375 1.4294 - 1.4050 1.4014 1.3780
Internal 3B 1.3912 1.3830 1.4096 1.4050 1.4375
External 17/16-28 UN 2A 0.0013 1.4362 1.4297 - 1.4130 1.4088 1.3936
Internal 2B 1.4070 1.3990 1.4198 1.4143 1.4375
External 17/16-28 UN 3A 0.0000 1.4375 1.4310 - 1.4143 1.4112 1.3949
Internal 3B 1.4051 1.3990 1.4184 1.4143 1.4375
External 11/2-6 UNC 1A 0.0024 1.4976 1.4703 - 1.3893 1.3772 1.2992
Internal 1B 1.3500 1.3200 1.4075 1.3917 1.5000
External 11/2-6 UNC 2A 0.0024 1.4976 1.4794 1.4703 1.3893 1.3812 1.2992
Internal 2B 1.3500 1.3200 1.4022 1.3917 1.5000
External 11/2-6 UNC 3A 0.0000 1.5000 1.4818 - 1.3917 1.3856 1.3016
Internal 3B 1.3396 1.3200 1.3996 1.3917 1.5000
External 11/2-8 UN 2A 0.0022 1.4978 1.4828 1.4753 1.4166 1.4093 1.3490
Internal 2B 1.3900 1.3650 1.4283 1.4188 1.5000
External 11/2-8 UN 3A 0.0000 1.5000 1.4850 - 1.4188 1.4133 1.3512
Internal 3B 1.3797 1.3650 1.4259 1.4188 1.5000
External 11/2-10 UNS 2A 0.0019 1.4981 1.4852 - 1.4331 1.4267 1.3791
Internal 2B 1.4130 1.3920 1.4433 1.4350 1.5000
External 11/2-12 UNF 1A 0.0019 1.4981 1.4809 - 1.4440 1.4344 1.3989
Internal 1B 1.4280 1.4100 1.4584 1.4459 1.5000
External 11/2-12 UNF 2A 0.0019 1.4981 1.4867 - 1.4440 1.4376 1.3989
Internal 2B 1.4280 1.4100 1.4542 1.4459 1.5000
External 11/2-12 UNF 3A 0.0000 1.5000 1.4886 - 1.4459 1.4411 1.4008
Internal 3B 1.4198 1.4100 1.4522 1.4459 1.5000
External 11/2-14 UNS 2A 0.0017 1.4983 1.4880 - 1.4519 1.4464 1.4133
Internal 2B 1.4380 1.4230 1.4608 1.4536 1.5000
External 11/2-16 UN 2A 0.0016 1.4984 1.4890 - 1.4578 1.4526 1.4239
Internal 2B 1.4460 1.4320 1.4662 1.4594 1.5000
External 11/2-16 UN 3A 0.0000 1.5000 1.4906 - 1.4594 1.4555 1.4255
Internal 3B 1.4408 1.4320 1.4645 1.4594 1.5000
External 11/2-18 UNEF 2A 0.0015 1.4985 1.4898 - 1.4624 1.4574 1.4324
Internal 2B 1.4520 1.4400 1.4704 1.4639 1.5000
External 11/2-18 UNEF 3A 0.0000 1.5000 1.4913 - 1.4639 1.4602 1.4339
Internal 3B 1.4480 1.4400 1.4687 1.4639 1.5000
External 11/2-20 UN 2A 0.0014 1.4986 1.4905 - 1.4661 1.4613 1.4391
Internal 2B 1.4570 1.4460 1.4737 1.4675 1.5000
External 11/2-20 UN 3A 0.0000 1.5000 1.4919 - 1.4675 1.4639 1.4405
Internal 3B 1.4537 1.4460 1.4721 1.4675 1.5000
External 11/2-24 UNS 2A 0.0013 1.4987 1.4915 - 1.4716 1.4672 1.4991
Internal 2B 1.4650 1.4550 1.4787 1.4729 1.5000
External 11/2-28 UN 2A 0.0013 1.4987 1.4922 - 1.4755 1.4713 1.4561
Internal 2B 1.4700 1.4610 1.4823 1.4768 1.5000
External 11/2-28 UN 3A 0.0000 1.5000 1.4935 - 1.4768 1.4737 1.4574
Internal 3B 4.4676 1.4610 1.4809 1.4768 1.5000
External 19/16-6 UN 2A 0.0024 1.5601 1.5419 - 1.4518 1.4436 1.3617
Internal 2B 1.4130 1.3820 1.4648 1.4542 1.5625
External 19/16-6 UN 3A 0.0000 1.5625 1.5443 - 1.4542 1.4481 1.3641
Internal 3B 1.4021 1.3820 1.4622 1.4542 1.5625
External 19/16-8 UN 2A 0.0022 1.5603 1.5453 - 1.4791 1.4717 1.4115
Internal 2B 1.4520 1.4270 1.4909 1.4813 1.5625
External 19/16-8 UN 3A 0.0000 1.5625 1.5475 - 1.4813 1.4758 1.4137
Internal 3B 1.4422 1.4270 1.4885 1.4813 1.5625
External 19/16-12 UN 2A 0.0018 1.5607 1.5493 - 1.5066 1.5007 1.4615
Internal 2B 1.4900 1.4720 1.5160 1.5084 1.5625
External 19/16-12 UN 3A 0.0000 1.5625 1.5511 - 1.5084 1.5040 1.4633
Internal 3B 1.4823 1.4720 1.5141 1.5084 1.5625
External 19/16-16 UN 2A 0.0016 1.5609 1.5515 - 1.5203 1.5151 1.4864
Internal 2B 1.5090 1.4950 1.5287 1.5219 1.5625
External 19/16-16 UN 3A 0.0000 1.5625 1.5531 - 1.5219 1.5180 1.4880
Internal 3B 1.5033 1.4950 1.5270 1.5219 1.5625
External 19/16-18 UNEF 2A 0.0015 1.5610 1.5523 - 1.5249 1.5199 1.4949
Internal 2B 1.5150 1.5020 1.5329 1.5264 1.5625
External 19/16-18 UNEF 3A 0.0000 1.5625 1.5538 - 1.5264 1.5227 1.4964
Internal 3B 1.5105 1.5020 1.5312 1.5264 1.5625
External 19/16-20 UN 2A 0.0014 1.5611 1.5530 - 1.5286 1.5238 1.5016
Internal 2B 1.5200 1.5080 1.5362 1.5300 1.5625
External 19/16-20 UN 3A 0.0000 1.5625 1.5544 - 1.5300 1.5264 1.5030
Internal 3B 1.5162 1.5080 1.5346 1.5300 1.5625
External 15/8-6 UN 2A 0.0025 1.6225 1.6043 - 1.5142 1.5060 1.4246
Internal 2B 1.4750 1.4450 1.5274 1.5167 1.6250
External 15/8-6 UN 3A 0.0000 1.6250 1.6068 - 1.5167 1.5105 1.4271
Internal 3B 1.4646 1.4450 1.5247 1.5167 1.6250
External 15/8-8 UN 2A 0.0022 1.6228 1.6078 1.6003 1.5416 1.5342 1.4784
Internal 2B 1.5150 1.4900 1.5535 1.5438 1.6250
External 15/8-8 UN 3A 0.0000 1.6250 1.6100 - 1.5438 1.5382 1.4806
Internal 3B 1.5047 1.4900 1.5510 1.5438 1.6250
External 15/8-10 UNS 2A 0.0019 1.6231 1.6102 - 1.5581 1.5517 1.5041
Internal 2B 1.5380 1.5170 1.5683 1.5600 1.6250
External 15/8-12 UN 2A 0.0018 1.6232 1.6118 - 1.5691 1.5632 1.5240
Internal 2B 1.5530 1.5350 1.5785 1.5709 1.6250
External 15/8-12 UN 3A 0.0000 1.6250 1.6136 - 1.5709 1.5665 1.5258
Internal 3B 1.5448 1.5350 1.5766 1.5709 1.6250
External 15/8-14 UNS 2A 0.0017 1.6233 1.6130 - 1.5769 1.5714 1.5383
Internal 2B 1.5640 1.5480 1.5858 1.5786 1.6250
External 15/8-16 UN 2A 0.0016 1.6234 1.6140 - 1.5828 1.5776 1.5489
Internal 2B 1.5710 1.5570 1.5912 1.5844 1.6250
External 15/8-16 UN 3A 0.0000 1.6250 1.6156 - 1.5844 1.5805 1.5505
Internal 3B 1.5658 1.5570 1.5895 1.5844 1.6250
External 15/8-18 UNEF 2A 0.0015 1.6235 1.6148 - 1.5874 1.5824 1.5574
Internal 2B 1.5780 1.5650 1.5954 1.5889 1.6250
External 15/8-18 UNEF 3A 0.0000 1.6250 1.6163 - 1.5889 1.5852 1.5589
Internal 3B 1.5730 1.5650 1.5937 1.5889 1.6250
External 15/8-20 UN 2A 0.0014 1.6236 1.6155 - 1.5911 1.5863 1.5641
Internal 2B 1.5820 1.5710 1.5987 1.5925 1.6250
External 15/8-20 UN 3A 0.0000 1.6250 1.6169 - 1.5925 1.5889 1.5655
Internal 3B 1.5787 1.5710 1.5971 1.5925 1.6250
External 15/8-24 UNS 2A 0.0013 1.6237 1.6165 - 1.5966 1.5922 1.5741
Internal 2B 1.5900 1.5800 1.6037 1.5979 1.6250
External 111/16-6 UN 2A 0.0025 1.6850 1.6668 - 1.5767 1.5684 1.4866
Internal 2B 1.5380 1.5070 1.5900 1.5792 1.6875
External 111/16-6 UN 3A 0.0000 1.6875 1.6693 - 1.5792 1.5730 1.4891
Internal 3B 1.5271 1.5070 1.5873 1.5792 1.6875
External 111/16-8 UN 2A 0.0022 1.6853 1.6703 - 1.6041 1.5966 1.5365
Internal 2B 1.5770 1.5520 1.6160 1.6063 1.6875
External 111/16-8 UN 3A 0.0000 1.6875 1.6725 - 1.6063 1.6007 1.5387
Internal 3B 1.5672 1.5520 1.6136 1.6063 1.6875
External 111/16-12 UN 2A 0.0018 1.6857 1.6743 - 1.6316 1.6256 1.5865
Internal 2B 1.6150 1.5970 1.6412 1.6334 1.6875
External 111/16-12 UN 3A 0.0000 1.6875 1.6761 - 1.6334 1.6289 1.5883
Internal 3B 1.6073 1.5970 1.6392 1.6334 1.6875
External 111/16-16 UN 2A 0.0016 1.6859 1.6765 - 1.6453 1.6400 1.6114
Internal 2B 1.6340 1.6200 1.6538 1.6469 1.6875
External 111/16-16 UN 3A 0.0000 1.6875 1.6781 - 1.6469 1.6429 1.6130
Internal 3B 1.6283 1.6200 1.6521 1.6469 1.6875
External 111/16-18 UNEF 2A 0.0015 1.6860 1.6773 - 1.6499 1.6448 1.6199
Internal 2B 1.6400 1.6270 1.6580 1.6514 1.6875
External 111/16-18 UNEF 3A 0.0000 1.6875 1.6788 - 1.6514 1.6476 1.6214
Internal 3B 1.6355 1.6270 1.6563 1.6514 1.6875
External 111/16-20 UN 2A 0.0015 1.6860 1.6779 - 1.6535 1.6487 1.6265
Internal 2B 1.6450 1.6330 1.6613 1.6550 1.6875
External 111/16-20 UN 3A 0.0000 1.6875 1.6794 - 1.6550 1.6514 1.6280
Internal 3B 1.6412 1.6330 1.6597 1.6550 1.6875
External 13/4-5 UNC 1A 0.0027 1.7473 1.7165 - 1.6174 1.6040 1.5092
Internal 1B 1.5680 1.5340 1.6375 1.6201 1.7500
External 13/4-5 UNC 2A 0.0027 1.7473 1.7268 1.7165 1.6174 1.6085 1.5092
Internal 2B 1.5680 1.5340 1.6317 1.6201 1.7500
External 13/4-5 UNC 3A 0.0000 1.7500 1.7295 - 1.6201 1.6134 1.5119
Internal 3B 1.5575 1.5340 1.6288 1.6201 1.7500
External 13/4-6 UN 2A 0.0025 1.7475 1.7293 - 1.6392 1.6309 1.5491
Internal 2B 1.6000 1.5700 1.6525 1.6417 1.7500
External 13/4-6 UN 3A 0.0000 1.7500 1.7318 - 1.6417 1.6354 1.5516
Internal 3B 1.5896 1.5700 1.6498 1.6417 1.7500
External 13/4-8 UN 2A 0.0023 1.7477 1.7327 1.7252 1.6665 1.6590 1.5989
Internal 2B 1.6400 1.6150 1.6786 1.6688 1.7500
External 13/4-8 UN 3A 0.0000 1.7500 1.7350 - 1.6688 1.6632 1.6012
Internal 3B 1.6297 1.6150 1.6762 1.6688 1.7500
External 13/4-10 UNS 2A 0.0019 1.7481 1.7352 - 1.6831 1.6766 1.6291
Internal 2B 1.6630 1.6420 1.6934 1.6850 1.7500
External 13/4-12 UN 2A 0.0018 1.7482 1.7368 - 1.6941 1.6881 1.6490
Internal 2B 1.6780 1.6600 1.7037 1.6959 1.7500
External 13/4-12 UN 3A 0.0000 1.7500 1.7386 - 1.6959 1.6914 1.6508
Internal 3B 1.6698 1.6600 1.7017 1.6959 1.7500
External 13/4-14 UNS 2A 0.0017 1.7483 1.7380 - 1.7019 1.6963 1.6632
Internal 2B 1.6880 1.6730 1.7109 1.7036 1.7500
External 13/4-16 UN 2A 0.0016 1.7484 1.7390 - 1.7078 1.7025 1.6739
Internal 2B 1.6960 1.6820 1.7163 1.7094 1.7500
External 13/4-16 UN 3A 0.0000 1.7500 1.7406 - 1.7094 1.7054 1.6755
Internal 3B 1.6908 1.6820 1.7146 1.7094 1.7500
External 13/4-18 UNS 2A 0.0015 1.7485 1.7398 - 1.7124 1.7073 1.6824
Internal 2B 1.7030 1.6900 1.7205 1.7139 1.7500
External 13/4-20 UN 2A 0.0015 1.7485 1.7404 - 1.7160 1.7112 1.6890
Internal 2B 1.7070 1.6960 1.7238 1.7175 1.7500
External 13/4-20 UN 3A 0.0000 1.7500 1.7419 - 1.7175 1.7139 1.6905
Internal 3B 1.7037 1.6960 1.7222 1.7175 1.7500
External 113/16-6 UN 2A 0.0025 1.8100 1.7918 - 1.7017 1.6933 1.6116
Internal 2B 1.6630 1.6320 1.7151 1.7042 1.8125
External 113/16-6 UN 3A 0.0000 1.8125 1.7943 - 1.7042 1.6979 1.6141
Internal 3B 1.6521 1.6320 1.7124 1.7042 1.8125
External 113/16-8 UN 2A 0.0023 1.8102 1.7952 - 1.7290 1.7214 1.6614
Internal 2B 1.7020 1.6770 1.7412 1.7313 1.8125
External 113/16-8 UN 3A 0.0000 1.8125 1.7975 - 1.7313 1.7256 1.6637
Internal 3B 1.6922 1.6770 1.7387 1.7313 1.8125
External 113/16-12 UN 2A 0.0018 1.8107 1.7993 - 1.7566 1.7506 1.7115
Internal 2B 1.7400 1.7220 1.7662 1.7584 1.8125
External 113/16-12 UN 3A 0.0000 1.8125 1.8011 - 1.7584 1.7539 1.7133
Internal 3B 1.7323 1.7220 1.7642 1.7584 1.8125
External 113/16-16 UN 2A 0.0016 1.8109 1.8015 - 1.7703 1.7650 1.7364
Internal 2B 1.7590 1.7450 1.7788 1.7719 1.8125
External 113/16-16 UN 3A 0.0000 1.8125 1.8031 - 1.7719 1.7679 1.7380
Internal 3B 1.7533 1.7450 1.7771 1.7719 1.8125
External 113/16-20 UN 2A 0.0015 1.8110 1.8029 - 1.7785 1.7737 1.7515
Internal 2B 1.7700 1.7580 1.7863 1.7800 1.8125
External 113/16-20 UN 3A 0.0000 1.8125 1.8044 - 1.7800 1.7764 1.7530
Internal 3B 1.7662 1.7580 1.7847 1.7800 1.8125
External 17/8-6 UN 2A 0.0025 1.8725 1.8543 - 1.7642 1.7558 1.6741
Internal 2B 1.7250 1.6950 1.7777 1.7667 1.8750
External 17/8-6 UN 3A 0.0000 1.8750 1.8568 - 1.7667 1.7604 1.6766
Internal 3B 1.7146 1.6950 1.7749 1.7667 1.8750
External 17/8-8 UN 2A 0.0023 1.8727 1.8577 1.8502 1.7915 1.7838 1.7239
Internal 2B 1.7650 1.7400 1.8038 1.7938 1.8750
External 17/8-8 UN 3A 0.0000 1.8750 1.8600 - 1.7938 1.7881 1.7262
Internal 3B 1.7547 1.7400 1.8013 1.7938 1.8750
External 17/8-10 UNS 2A 0.0019 1.8731 1.8602 - 1.8081 1.8016 1.7541
Internal 2B 1.7880 1.7670 1.8184 1.8100 1.8750
External 17/8-12 UN 2A 0.0018 1.8732 1.8618 - 1.8191 1.8131 1.7740
Internal 2B 1.8030 1.7850 1.8287 1.8209 1.8750
External 17/8-12 UN 3A 0.0000 1.8750 1.8636 - 1.8209 1.8164 1.7758
Internal 3B 1.7948 1.7850 1.8267 1.8209 1.8750
External 17/8-14 UNS 2A 0.0017 1.8733 1.8630 - 1.8269 1.8213 1.7883
Internal 2B 1.8140 1.7980 1.8359 1.8286 1.8750
External 17/8-16 UN 2A 0.0016 1.8734 1.8640 - 1.8328 1.8275 1.7989
Internal 2B 1.8210 1.8070 1.8413 1.8344 1.8750
External 17/8-16 UN 3A 0.0000 1.8750 1.8656 - 1.8344 1.8304 1.8005
Internal 3B 1.8158 1.8070 1.8396 1.8344 1.8750
External 17/8-18 UNS 2A 0.0015 1.8735 1.8648 - 1.8374 1.8323 1.8074
Internal 2B 1.8280 1.8150 1.8455 1.8389 1.8750
External 17/8-20 UN 2A 0.0015 1.8735 1.8654 - 1.8410 1.8362 1.8140
Internal 2B 1.8320 1.8210 1.8488 1.8425 1.8750
External 17/8-20 UN 3A 0.0000 1.8750 1.8669 - 1.8425 1.8389 1.8155
Internal 3B 1.8287 1.8210 1.8472 1.8425 1.8750
External 115/16-6 UN 2A 0.0026 1.9349 1.9167 - 1.8266 1.8181 1.7365
Internal 2B 1.7880 1.7570 1.8403 1.8292 1.9375
External 115/16-6 UN 3A 0.0000 1.9375 1.9193 - 1.8292 1.8228 1.7391
Internal 3B 1.7771 1.7570 1.8375 1.8292 1.9375
External 115/16-8 UN 2A 0.0023 1.9352 1.9202 - 1.8540 1.8463 1.7864
Internal 2B 1.8270 1.8020 1.8663 1.8563 1.9375
External 115/16-8 UN 3A 0.0000 1.9375 1.9225 - 1.8563 1.8505 1.7887
Internal 3B 1.8172 1.8020 1.8638 1.8563 1.9375
External 115/16-12 UN 2A 0.0018 1.9357 1.9243 - 1.8816 1.8755 1.8365
Internal 2B 1.8650 1.8470 1.8913 1.8834 1.9375
External 115/16-12 UN 3A 0.0000 1.9375 1.9261 - 1.8834 1.8789 1.8383
Internal 3B 1.8573 1.8470 1.8893 1.8834 1.9375
External 115/16-16 UN 2A 0.0016 1.9359 1.9265 - 1.8953 1.8899 1.8614
Internal 2B 1.8840 1.8700 1.9039 1.8969 1.9375
External 115/16-16 UN 3A 0.0000 1.9375 1.9281 - 1.8969 1.8929 1.8630
Internal 3B 1.8783 1.8700 1.9021 1.8969 1.9375
External 115/16-20 UN 2A 0.0015 1.9360 1.9279 - 1.9035 1.8986 1.8765
Internal 2B 1.8950 1.8830 1.9114 1.9050 1.9375
External 115/16-20 UN 3A 0.0000 1.9375 1.9294 - 1.9050 1.9013 1.8780
Internal 3B 1.8912 1.8830 1.9098 1.9050 1.9375
External 2-41/2 UNC 1A 0.0029 1.9971 1.9641 - 1.8528 1.8385 1.7324
Internal 1B 1.7950 1.7590 1.8743 1.8557 2.0000
External 2-41/2 UNC 2A 0.0029 1.9971 1.9751 1.9641 1.8528 1.8433 1.7324
Internal 2B 1.7950 1.7590 1.8681 1.8557 2.0000
External 2-41/2 UNC 3A 0.0000 2.0000 1.9780 - 1.8557 1.8486 1.7353
Internal 3B 1.7861 1.7590 1.8650 1.8557 2.0000
External 2-6 UN 2A 0.0026 1.9974 1.9792 - 1.8891 1.8805 1.7990
Internal 2B 1.8500 1.8200 1.9028 1.8917 2.0000
External 2-6 UN 3A 0.0000 2.0000 1.9818 - 1.8917 1.8853 1.8016
Internal 3B 1.8396 1.8200 1.9000 1.8917 2.0000
External 2-8 UN 2A 0.0023 1.9977 1.9827 1.9752 1.9165 1.9087 1.8489
Internal 2B 1.8900 1.8650 1.9289 1.9188 2.0000
External 2-8 UN 3A 0.0000 2.0000 1.9850 - 1.9188 1.9130 1.8512
Internal 3B 1.8797 1.8650 1.9264 1.9188 2.0000
External 2-10 UNS 2A 0.0020 1.9980 1.9851 - 1.9330 1.9265 1.8790
Internal 2B 1.9130 1.8920 1.9435 1.9350 2.0000
External 2-12 UN 2A 0.0018 1.9982 1.9868 - 1.9441 1.9380 1.8990
Internal 2B 1.9280 1.9100 1.9538 1.9459 2.0000
External 2-12 UN 3A 0.0000 2.0000 1.9886 - 1.9459 1.9414 1.9008
Internal 3B 1.9198 1.9100 1.9518 1.9459 2.0000
External 2-14 UNS 2A 0.0017 1.9983 1.9880 - 1.9519 1.9462 1.9133
Internal 2B 1.9380 1.9230 1.9610 1.9536 2.0000
External 2-16 UN 2A 0.0016 1.9984 1.9890 - 1.9578 1.9524 1.9239
Internal 2B 1.9460 1.9320 1.9664 1.9594 2.0000
External 2-16 UN 3A 0.0000 2.0000 1.9906 - 1.9594 1.9554 1.9255
Internal 3B 1.9408 1.9320 1.9646 1.9594 2.0000
External 2-18 UNS 2A 0.0015 1.9985 1.9898 - 1.9624 1.9573 1.9324
Internal 2B 1.9530 1.9400 1.9706 1.9639 2.0000
External 2-20 UN 2A 0.0015 1.9985 1.9904 - 1.9660 1.9611 1.9390
Internal 2B 1.9570 1.9460 1.9739 1.9675 2.0000
External 2-20 UN 3A 0.0000 2.0000 1.9919 - 1.9675 1.9638 1.9405
Internal 3B 1.9537 1.9460 1.9723 1.9675 2.0000
External 21/16-16 UNS 2A 0.0016 2.0609 2.0515 - 2.0203 2.0149 1.9864
Internal 2B 2.0090 1.9950 2.0289 2.0219 2.0625
External 21/16-16 UNS 3A 0.0000 2.0625 2.0531 - 2.0219 2.0179 1.9880
Internal 3B 2.0033 1.9950 2.0271 2.0219 2.0625
External 21/8-6 UN 2A 0.0026 2.1224 2.1042 - 2.0141 2.0054 1.9240
Internal 2B 1.9750 1.9450 2.0280 2.0167 2.1250
External 21/8-6 UN 3A 0.0000 2.1250 2.1068 - 2.0167 2.0102 1.9266
Internal 3B 1.9646 1.9450 2.0251 2.0167 2.1250
External 21/8-8 UN 2A 0.0024 2.1226 2.1076 2.1001 2.0414 2.0335 1.9738
Internal 2B 2.0150 1.9900 2.0540 2.0438 2.1250
External 21/8-8 UN 3A 0.0000 2.1250 2.1100 - 2.0438 2.0379 1.9762
Internal 3B 2.0047 1.9900 2.0515 2.0438 2.1250
External 21/8-12 UN 2A 0.0018 2.1232 2.1118 - 2.0691 2.0630 2.0240
Internal 2B 2.0530 2.0350 2.0788 2.0709 2.1250
External 21/8-12 UN 3A 0.0000 2.1250 2.1136 - 2.0709 2.0664 2.0258
Internal 3B 2.0448 2.0350 2.0768 2.0709 2.1250
External 21/8-16 UN 2A 0.0016 2.1234 2.1140 - 2.0828 2.0774 2.0489
Internal 2B 2.0710 2.0570 2.0914 2.0844 2.1250
External 21/8-16 UN 3A 0.0000 2.1250 2.1156 - 2.0844 2.0803 2.0505
Internal 3B 2.0658 2.0570 2.0896 2.0844 2.1250
External 21/8-20 UN 2A 0.0015 2.1235 2.1154 - 2.0910 2.0861 2.0640
Internal 2B 2.0820 2.0710 2.0989 2.0925 2.1250
External 21/8-20 UN 3A 0.0000 2.1250 2.1169 - 2.0925 2.0888 2.0655
Internal 3B 2.0787 2.0710 2.0973 2.0925 2.1250
External 23/16-16 UNS 2A 0.0016 2.1859 2.1765 - 2.1453 2.1399 2.1114
Internal 2B 2.1340 2.1200 2.1539 2.1469 2.1875
External 23/16-16 UNS 3A 0.0000 2.1875 2.1781 - 2.1469 2.1428 2.1130
Internal 3B 2.1283 2.1200 2.1521 2.1469 2.1875
External 21/4-41/2 UNC 1A 0.0029 2.2471 2.2141 - 2.1028 2.0882 1.9824
Internal 1B 2.0450 2.0090 2.1247 2.1057 2.2500
External 21/4-41/2 UNC 2A 0.0029 2.2471 2.2251 2.2141 2.1028 2.0931 1.9824
Internal 2B 2.0450 2.0090 2.1183 2.1057 2.2500
External 21/4-41/2 UNC 3A 0.0000 2.2500 2.2280 - 2.1057 2.0984 1.9853
Internal 3B 2.0361 2.0090 2.1152 2.1057 2.2500
External 21/4-6 UN 2A 0.0026 2.2474 2.2292 - 2.1391 2.1303 2.0490
Internal 2B 2.1000 2.0700 2.1531 2.1417 2.2500
External 21/4-6 UN 3A 0.0000 2.2500 2.2318 - 2.1417 2.1351 2.0516
Internal 3B 2.0896 2.0700 2.1502 2.1417 2.2500
External 21/4-8 UN 2A 0.0024 2.2476 2.2326 2.2251 2.1664 2.1584 2.0988
Internal 2B 2.1400 2.1150 2.1792 2.1688 2.2500
External 21/4-8 UN 3A 0.0000 2.2500 2.2350 - 2.1688 2.1628 2.1012
Internal 3B 2.1297 2.1150 2.1766 2.1688 2.2500
External 21/4-10 UNS 2A 0.0020 2.2480 2.2351 - 2.1830 2.1765 2.1290
Internal 2B 2.1630 2.1420 2.1935 2.1850 2.2500
External 21/4-12 UN 2A 0.0018 2.2482 2.2368 - 2.1941 2.1880 2.1490
Internal 2B 2.1780 2.1600 2.2038 2.1959 2.2500
External 21/4-12 UN 3A 0.0000 2.2500 2.2386 - 2.1959 2.1914 2.1508
Internal 3B 2.1698 2.1600 2.2018 2.1959 2.2500
External 21/4-14 UNS 2A 0.0017 2.2483 2.2380 - 2.2019 2.1962 2.1633
Internal 2B 2.1880 2.1730 2.2110 2.2036 2.2500
External 21/4-16 UN 2A 0.0016 2.2484 2.2390 - 2.2078 2.2024 2.1739
Internal 2B 2.1960 2.1820 2.2164 2.2094 2.2500
External 21/4-16 UN 3A 0.0000 2.2500 2.2406 - 2.2094 2.2053 2.1755
Internal 3B 2.1908 2.1820 2.2146 2.2094 2.2500
External 21/4-18 UNS 2A 0.0015 2.2485 2.2398 - 2.2124 2.2073 2.1824
Internal 2B 2.2030 2.1900 2.2206 2.2139 2.2500
External 21/4-20 UN 2A 0.0015 2.2485 2.2404 - 2.2160 2.2111 2.1890
Internal 2B 2.2070 2.1960 2.2239 2.2175 2.2500
External 21/4-20 UN 3A 0.0000 2.2500 2.2419 - 2.2175 2.2137 2.1905
Internal 3B 2.2037 2.1960 2.2223 2.2175 2.2500
External 25/16-16 UNS 2A 0.0017 2.3108 2.3014 - 2.2702 2.2647 2.2363
Internal 2B 2.2590 2.2450 2.2791 2.2719 2.3125
External 25/16-16 UNS 3A 0.0000 2.3125 2.3031 - 2.2719 2.2678 2.2380
Internal 3B 2.2533 2.2450 2.2773 2.2719 2.3125
External 23/8-6 UN 2A 0.0027 2.3723 2.3541 - 2.2640 2.2551 2.1739
Internal 2B 2.2260 2.1950 2.2782 2.2667 2.3750
External 23/8-6 UN 3A 0.0000 2.3750 2.3568 - 2.2667 2.2601 2.1766
Internal 3B 2.2146 2.1950 2.2753 2.2667 2.3750
External 23/8-8 UN 2A 0.0024 2.3726 2.3576 - 2.2914 2.2833 2.2238
Internal 2B 2.2650 2.2400 2.3043 2.2938 2.3750
External 23/8-8 UN 3A 0.0000 2.3750 2.3600 - 2.2938 2.2878 2.2262
Internal 3B 2.2547 2.2400 2.3017 2.2938 2.3750
External 23/8-12 UN 2A 0.0019 2.3731 2.3617 - 2.3190 2.3128 2.2739
Internal 2B 2.3030 2.2850 2.3290 2.3209 2.3750
External 23/8-12 UN 3A 0.0000 2.3750 2.3636 - 2.3209 2.3163 2.2758
Internal 3B 2.2948 2.2850 2.3269 2.3209 2.3750
External 23/8-16 UN 2A 0.0017 2.3733 2.3639 - 2.3327 2.3272 2.2988
Internal 2B 2.3210 2.3070 2.3416 2.3344 2.3750
External 23/8-16 UN 3A 0.0000 2.3750 2.3656 - 2.3344 2.3303 2.3005
Internal 3B 2.3158 2.3070 2.3398 2.3344 2.3750
External 23/8-20 UN 2A 0.0015 2.3735 2.3654 - 2.3410 2.3359 2.3140
Internal 2B 2.3320 2.3210 2.3491 2.3425 2.3750
External 23/8-20 UN 3A 0.0000 2.3750 2.3669 - 2.3425 2.3387 2.3155
Internal 3B 2.3287 2.3210 2.3475 2.3425 2.3750
External 27/16-16 UNS 2A 0.0017 2.4358 2.4264 - 2.3952 2.3897 2.3613
Internal 2B 2.3840 2.3700 2.4041 2.3969 2.4375
External 27/16-16 UNS 3A 0.0000 2.4375 2.4281 - 2.3969 2.3928 2.3630
Internal 3B 2.3783 2.3700 2.4023 2.3969 2.4375
External 21/2-4 UNC 1A 0.0031 2.4969 2.4612 - 2.3345 2.3190 2.1992
Internal 1B 2.2670 2.2290 2.3578 2.3376 2.5000
External 21/2-4 UNC 2A 0.0031 2.4969 2.4731 2.4612 2.3345 2.3241 2.1992
Internal 2B 2.2670 2.2290 2.3511 2.3376 2.5000
External 21/2-4 UNC 3A 0.0000 2.5000 2.4762 - 2.3376 2.3298 2.2023
Internal 3B 2.2594 2.2290 2.3477 2.3376 2.5000
External 21/2-6 UN 2A 0.0027 2.4973 2.4791 - 2.3890 2.3800 2.2989
Internal 2B 2.3500 2.3200 2.4033 2.3917 2.5000
External 21/2-6 UN 3A 0.0000 2.5000 2.4818 - 2.3917 2.3850 2.3016
Internal 3B 2.3396 2.3200 2.4004 2.3917 2.5000
External 21/2-8 UN 2A 0.0024 2.4976 2.4826 2.4751 2.4164 2.4082 2.3488
Internal 2B 2.3900 2.3650 2.4294 2.4188 2.5000
External 21/2-8 UN 3A 0.0000 2.5000 2.4850 - 2.4188 2.4127 2.3512
Internal 3B 2.3797 2.3650 2.4268 2.4188 2.5000
External 21/2-10 UNS 2A 0.0020 2.4980 2.4851 - 2.4330 2.4263 2.3790
Internal 2B 2.4130 2.3920 2.4437 2.4350 2.5000
External 21/2-12 UN 2A 0.0019 2.4981 2.4867 - 2.4440 2.4378 2.3989
Internal 2B 2.4280 2.4100 2.4540 2.4459 2.5000
External 21/2-12 UN 3A 0.0000 2.5000 2.4886 - 2.4459 2.4413 2.4008
Internal 3B 2.4198 2.4100 2.4519 2.4459 2.5000
External 21/2-14 UNS 2A 0.0017 2.4983 2.4880 - 2.4519 2.4461 2.4133
Internal 2B 2.4380 2.4230 2.4612 2.4536 2.5000
External 21/2-16 UN 2A 0.0017 2.4983 2.4889 - 2.4577 2.4522 2.4238
Internal 2B 2.4460 2.4320 2.4666 2.4594 2.5000
External 21/2-16 UN 3A 0.0000 2.5000 2.4906 - 2.4594 2.4553 2.4255
Internal 3B 2.4408 2.4320 2.4648 2.4594 2.5000
External 21/2-18 UNS 2A 0.0016 2.4984 2.4897 - 2.4623 2.4570 2.4323
Internal 2B 2.4530 2.4400 2.4708 2.4639 2.5000
External 21/2-20 UN 2A 0.0015 2.4985 2.4904 - 2.4660 2.4609 2.4390
Internal 2B 2.4570 2.4460 2.4741 2.4675 2.5000
External 21/2-20 UN 3A 0.0000 2.5000 2.4919 - 2.4675 2.4637 2.4405
Internal 3B 2.4537 2.4460 2.4725 2.4675 2.5000
External 25/8-6 UN 2A 0.0027 2.6223 2.6041 - 2.5140 2.5050 2.4239
Internal 2B 2.4750 2.4450 2.5285 2.5167 2.6250
External 25/8-6 UN 3A 0.0000 2.6250 2.6068 - 2.5167 2.5099 2.4266
Internal 3B 2.4646 2.4450 2.5255 2.5167 2.6250
External 25/8-8 UN 2A 0.0025 2.6225 2.6075 - 2.5413 2.5331 2.4737
Internal 2B 2.5150 2.4900 2.5545 2.5438 2.6250
External 25/8-8 UN 3A 0.0000 2.6250 2.6100 - 2.5438 2.5376 2.4762
Internal 3B 2.5047 2.4900 2.5518 2.5438 2.6250
External 25/8-12 UN 2A 0.0019 2.6231 2.6117 - 2.5690 2.5628 2.5239
Internal 2B 2.5530 2.5350 2.5790 2.5709 2.6250
External 25/8-12 UN 3A 0.0000 2.6250 2.6136 - 2.5709 2.5663 2.5258
Internal 3B 2.5448 2.5350 2.5769 2.5709 2.6250
External 25/8-16 UN 2A 0.0017 2.6233 2.6139 - 2.5827 2.5772 2.5488
Internal 2B 2.5710 2.5570 2.5916 2.5844 2.6250
External 25/8-16 UN 3A 0.0000 2.6250 2.6156 - 2.5844 2.5803 2.5505
Internal 3B 2.5658 2.5570 2.5898 2.5844 2.6250
External 25/8-20 UN 2A 0.0015 2.6235 2.6154 - 2.5910 2.5859 2.5640
Internal 2B 2.5820 2.5710 2.5991 2.5925 2.6250
External 25/8-20 UN 3A 0.0000 2.6250 2.6169 - 2.5925 2.5887 2.5655
Internal 3B 2.5787 2.5710 2.5975 2.5925 2.6250
External 23/4-4 UNC 1A 0.0032 2.7468 2.7111 - 2.5844 2.5686 2.4491
Internal 1B 2.5170 2.4790 2.6082 2.5876 2.7500
External 23/4-4 UNC 2A 0.0032 2.7468 2.7230 2.7111 2.5844 2.5739 2.4491
Internal 2B 2.5170 2.4790 2.6013 2.5876 2.7500
External 23/4-4 UNC 3A 0.0000 2.7500 2.7262 - 2.5876 2.5797 2.4523
Internal 3B 2.5094 2.4790 2.5979 2.5876 2.7500
External 23/4-6 UN 2A 0.0027 2.7473 2.7291 - 2.6390 2.6299 2.5489
Internal 2B 2.6000 2.5700 2.6536 2.6417 2.7500
External 23/4-6 UN 3A 0.0000 2.7500 2.7318 - 2.6417 2.6349 2.5516
Internal 3B 2.5896 2.5700 2.6506 2.6417 2.7500
External 23/4-8 UN 2A 0.0025 2.7475 2.7325 2.7250 2.6663 2.6580 2.5987
Internal 2B 2.6400 2.6150 2.6796 2.6688 2.7500
External 23/4-8 UN 3A 0.0000 2.7500 2.7350 - 2.6688 2.6625 2.6012
Internal 3B 2.6297 2.6150 2.6769 2.6688 2.7500
External 23/4-10 UNS 2A 0.0020 2.7480 2.7351 - 2.6830 2.6763 2.6290
Internal 2B 2.6630 2.6420 2.6937 2.6850 2.7500
External 23/4-12 UN 2A 0.0019 2.7481 2.7367 - 2.6940 2.6878 2.6489
Internal 2B 2.6780 2.6600 2.7040 2.6959 2.7500
External 23/4-12 UN 3A 0.0000 2.7500 2.7386 - 2.6959 2.6913 2.6508
Internal 3B 2.6698 2.6600 2.7019 2.6959 2.7500
External 23/4-14 UNS 2A 0.0017 2.7483 2.7380 - 2.7019 2.6961 2.6633
Internal 2B 2.6880 2.6730 2.7112 2.7036 2.7500
External 23/4-16 UN 2A 0.0017 2.7483 2.7389 - 2.7077 2.7022 2.6738
Internal 2B 2.6960 2.6820 2.7166 2.7094 2.7500
External 23/4-16 UN 3A 0.0000 2.7500 2.7406 - 2.7094 2.7053 2.6755
Internal 3B 2.6908 2.6820 2.7148 2.7094 2.7500
External 23/4-18 UNS 2A 0.0016 2.7484 2.7397 - 2.7123 2.7070 2.6832
Internal 2B 2.7030 2.6900 2.7208 2.7139 2.7500
External 23/4-20 UN 2A 0.0015 2.7485 2.7404 - 2.7160 2.7109 2.6890
Internal 2B 2.7070 2.6960 2.7241 2.7175 2.7500
External 23/4-20 UN 3A 0.0000 2.7500 2.7419 - 2.7175 2.7137 2.6905
Internal 3B 2.7037 2.6960 2.7225 2.7175 2.7500
External 27/8-6 UN 2A 0.0028 2.8722 2.8540 - 2.7639 2.7547 2.6738
Internal 2B 2.7250 2.6950 2.7787 2.7667 2.8750
External 27/8-6 UN 3A 0.0000 2.8750 2.8568 - 2.7667 2.7598 2.6766
Internal 3B 2.7146 2.6950 2.7757 2.7667 2.8750
External 27/8-8 UN 2A 0.0025 2.8725 2.8575 - 2.7913 2.7829 2.7237
Internal 2B 2.7650 2.7400 2.8048 2.7938 2.8750
External 27/8-8 UN 3A 0.0000 2.8750 2.8600 - 2.7938 2.7875 2.7262
Internal 3B 2.7547 2.7400 2.8020 2.7938 2.8750
External 27/8-12 UN 2A 0.0019 2.8731 2.8617 - 2.8190 2.8127 2.7739
Internal 2B 2.8030 2.7850 2.8291 2.8209 2.8750
External 27/8-12 UN 3A 0.0000 2.8750 2.8636 - 2.8209 2.8162 2.7758
Internal 3B 2.7948 2.7850 2.8271 2.8209 2.8750
External 27/8-16 UN 2A 0.0017 2.8733 2.8639 - 2.8327 2.8271 2.7988
Internal 2B 2.8210 2.8070 2.8417 2.8344 2.8750
External 27/8-16 UN 3A 0.0000 2.8750 2.8656 - 2.8344 2.8302 2.8005
Internal 3B 2.8158 2.8070 2.8399 2.8344 2.8750
External 27/8-20 UN 2A 0.0016 2.8734 2.8653 - 2.8409 2.8357 2.8139
Internal 2B 2.8320 2.8210 2.8493 2.8425 2.8750
External 27/8-20 UN 3A 0.0000 2.8750 2.8669 - 2.8425 2.8386 2.8155
Internal 3B 2.8287 2.8210 2.8476 2.8425 2.8750
External 3-4 UNC 1A 0.0032 2.9968 2.9611 - 2.8344 2.8183 2.6991
Internal 1B 2.7670 2.7290 2.8585 2.8376 3.0000
External 3-4 UNC 2A 0.0032 2.9968 2.9730 2.9611 2.8344 2.8237 2.6991
Internal 2B 2.7670 2.7290 2.8515 2.8376 3.0000
External 3-4 UNC 3A 0.0000 3.0000 2.9762 - 2.8376 2.8296 2.7023
Internal 3B 2.7594 2.7290 2.8480 2.8376 3.0000
External 3-6 UN 2A 0.0028 2.9972 2.9790 - 2.8889 2.8796 2.7988
Internal 2B 2.8500 2.8200 2.9038 2.8917 3.0000
External 3-6 UN 3A 0.0000 3.0000 2.9818 - 2.8917 2.8847 2.8016
Internal 3B 2.8396 2.8200 2.9008 2.8917 3.0000
External 3-8 UN 2A 0.0026 2.9974 2.9824 2.9749 2.9162 2.9077 2.8486
Internal 2B 2.8900 2.8650 2.9299 2.9188 3.0000
External 3-8 UN 3A 0.0000 3.0000 2.9850 - 2.9188 2.9124 2.8512
Internal 3B 2.8797 2.8650 2.9271 2.9188 3.0000
External 3-10 UNS 2A 0.0020 2.9980 2.9851 - 2.9330 2.9262 2.8790
Internal 2B 2.9130 2.8920 2.9439 2.9350 3.0000
External 3-12 UN 2A 0.0019 2.9981 2.9867 - 2.9440 2.9377 2.8989
Internal 2B 2.9280 2.9100 2.9541 2.9459 3.0000
External 3-12 UN 3A 0.0000 3.0000 2.9886 - 2.9459 2.9412 2.9008
Internal 3B 2.9198 2.9100 2.9521 2.9459 3.0000
External 3-14 UNS 2A 0.0018 2.9982 2.9879 - 2.9518 2.9459 2.9132
Internal 2B 2.9380 2.9230 2.9613 2.9536 3.0000
External 3-16 UN 2A 0.0017 2.9983 2.9889 - 2.9577 2.9521 2.9238
Internal 2B 2.9460 2.9320 2.9667 2.9594 3.0000
External 3-16 UN 3A 0.0000 3.0000 2.9906 - 2.9594 2.9552 2.9255
Internal 3B 2.9408 2.9320 2.9649 2.9594 3.0000
External 3-18 UNS 2A 0.0016 2.9984 2.9897 - 2.9623 2.9569 2.9323
Internal 2B 2.9530 2.9400 2.9709 2.9639 3.0000
External 3-20 UN 2A 0.0016 2.9984 2.9903 - 2.9659 2.9607 2.9389
Internal 2B 2.9570 2.9460 2.9743 2.9675 3.0000
External 3-20 UN 3A 0.0000 3.0000 2.9919 - 2.9675 2.9636 2.9405
Internal 3B 2.9537 2.9460 2.9726 2.9675 3.0000
External 31/8-6 UN 2A 0.0028 3.1222 3.1040 - 3.0139 3.0045 2.9238
Internal 2B 2.9750 2.9450 3.0289 3.0167 3.1250
External 31/8-6 UN 3A 0.0000 3.1250 3.1068 - 3.0167 3.0097 2.9266
Internal 3B 2.9646 2.9450 3.0259 3.0167 3.1250
External 31/8-8 UN 2A 0.0026 3.1224 3.1074 - 3.0412 3.0326 2.9736
Internal 2B 3.0150 2.9900 3.0550 3.0438 3.1250
External 31/8-8 UN 3A 0.0000 3.1250 3.1100 - 3.0438 3.0374 2.9762
Internal 3B 3.0047 2.9900 3.0522 3.0438 3.1250
External 31/8-12 UN 2A 0.0019 3.1231 3.1117 - 3.0690 3.0627 3.0239
Internal 2B 3.0530 3.0350 3.0791 3.0709 3.1250
External 31/8-12 UN 3A 0.0000 3.1250 3.1136 - 3.0709 3.0662 3.0258
Internal 3B 3.0448 3.0350 3.0771 3.0709 3.1250
External 31/8-16 UN 2A 0.0017 3.1233 3.1139 - 3.0827 3.0771 3.0488
Internal 2B 3.0710 3.0570 3.0917 3.0844 3.1250
External 31/8-16 UN 3A 0.0000 3.1250 3.1156 - 3.0844 3.0802 3.0505
Internal 3B 3.0658 3.0570 3.0899 3.0844 3.1250
External 31/4-4 UNC 1A 0.0033 3.2467 3.2110 - 3.0843 3.0680 2.9490
Internal 1B 3.0170 2.9790 3.1088 3.0876 3.2500
External 31/4-4 UNC 2A 0.0033 3.2467 3.2229 3.2110 3.0843 3.0734 2.9490
Internal 2B 3.0170 2.9790 3.1017 3.0876 3.2500
External 31/4-4 UNC 3A 0.0000 3.2500 3.2262 - 3.0876 3.0794 2.9523
Internal 3B 3.0094 2.9790 3.0982 3.0876 3.2500
External 31/4-6 UN 2A 0.0028 3.2472 3.2290 - 3.1389 3.1294 3.0488
Internal 2B 3.1000 3.0700 3.1540 3.1417 3.2500
External 31/4-6 UN 3A 0.0000 3.2500 3.2318 - 3.1417 3.1346 3.0516
Internal 3B 3.0896 3.0700 3.1509 3.1417 3.2500
External 31/4-8 UN 2A 0.0026 3.2474 3.2324 3.2249 3.1662 3.1575 3.0986
Internal 2B 3.1400 3.1150 3.1801 3.1688 3.2500
External 31/4-8 UN 3A 0.0000 3.2500 3.2350 - 3.1688 3.1623 3.1012
Internal 3B 3.1297 3.1150 3.1773 3.1688 3.2500
External 31/4-10 UNS 2A 0.0020 3.2480 3.2351 - 3.1830 3.1762 3.1290
Internal 2B 3.1630 3.1420 3.1939 3.1850 3.2500
External 31/4-12 UN 2A 0.0019 3.2481 3.2367 - 3.1940 3.1877 3.1489
Internal 2B 3.1780 3.1600 3.2041 3.1959 3.2500
External 31/4-12 UN 3A 0.0000 3.2500 3.2386 - 3.1959 3.1912 3.1508
Internal 3B 3.1698 3.1600 3.2021 3.1959 3.2500
External 31/4-14 UNS 2A 0.0018 3.2482 3.2379 - 3.2018 3.1959 3.1632
Internal 2B 3.1880 3.1730 3.2113 3.2036 3.2500
External 31/4-16 UN 2A 0.0017 3.2483 3.2389 - 3.2077 3.2021 3.1738
Internal 2B 3.1960 3.1820 3.2167 3.2094 3.2500
External 31/4-16 UN 3A 0.0000 3.2500 3.2406 - 3.2094 3.2052 3.1755
Internal 3B 3.1908 3.1820 3.2149 3.2094 3.2500
External 31/4-18 UNS 2A 0.0016 3.2484 3.2397 - 3.2123 3.2069 3.1823
Internal 2B 3.2030 3.1900 3.2209 3.2139 3.2500
External 33/8-6 UN 2A 0.0029 3.3721 3.3539 - 3.2638 3.2543 3.1737
Internal 2B 3.2250 3.1950 3.2791 3.2667 3.3750
External 33/8-6 UN 3A 0.0000 3.3750 3.3568 - 3.2667 3.2595 3.1766
Internal 3B 3.2146 3.1950 3.2760 3.2667 3.3750
External 33/8-8 UN 2A 0.0026 3.3724 3.3574 - 3.2912 3.2824 3.2236
Internal 2B 3.2650 3.2400 3.3052 3.2938 3.3750
External 33/8-8 UN 3A 0.0000 3.3750 3.3600 - 3.2938 3.2872 3.2262
Internal 3B 3.2547 3.2400 3.3023 3.2938 3.3750
External 33/8-12 UN 2A 0.0019 3.3731 3.3617 - 3.3190 3.3126 3.2739
Internal 2B 3.3030 3.2850 3.3293 3.3209 3.3750
External 33/8-12 UN 3A 0.0000 3.3750 3.3636 - 3.3209 3.3161 3.2758
Internal 3B 3.2948 3.2850 3.3272 3.3209 3.3750
External 33/8-16 UN 2A 0.0017 3.3733 3.3639 - 3.3327 3.3269 3.2988
Internal 2B 3.3210 3.3070 3.3419 3.3344 3.3750
External 33/8-16 UN 3A 0.0000 3.3750 3.3656 - 3.3344 3.3301 3.3005
Internal 3B 3.3158 3.3070 3.3400 3.3344 3.3750
External 31/2-4 UNC 1A 0.0033 3.4967 3.4610 - 3.3343 3.3177 3.1990
Internal 1B 3.2670 3.2290 3.3591 3.3376 3.5000
External 31/2-4 UNC 2A 0.0033 3.4967 3.4729 3.4610 3.3343 3.3233 3.1990
Internal 2B 3.2670 3.2290 3.3519 3.3376 3.5000
External 31/2-4 UNC 3A 0.0000 3.5000 3.4762 - 3.3376 3.3293 3.2023
Internal 3B 3.2594 3.2290 3.3484 3.3376 3.5000
External 31/2-6 UN 2A 0.0029 3.4971 3.4789 - 3.3888 3.3792 3.2987
Internal 2B 3.3500 3.3200 3.4042 3.3917 3.5000
External 31/2-6 UN 3A 0.0000 3.5000 3.4818 - 3.3917 3.3845 3.3016
Internal 3B 3.3396 3.3200 3.4011 3.3917 3.5000
External 31/2-8 UN 2A 0.0026 3.4974 3.4824 3.4749 3.4162 3.4074 3.3486
Internal 2B 3.3900 3.3650 3.4303 3.4188 3.5000
External 31/2-8 UN 3A 0.0000 3.5000 3.4850 - 3.4188 3.4122 3.3512
Internal 3B 3.3797 3.3650 3.4274 3.4188 3.5000
External 31/2-10 UNS 2A 0.0021 3.4979 3.4850 - 3.4329 3.4260 3.3789
Internal 2B 3.4130 3.3920 3.4440 3.4350 3.5000
External 31/2-12 UN 2A 0.0019 3.4981 3.4867 - 3.4440 3.4376 3.3989
Internal 2B 3.4280 3.4100 3.4543 3.4459 3.5000
External 31/2-12 UN 3A 0.0000 3.5000 3.4886 - 3.4459 3.4411 3.4008
Internal 3B 3.4198 3.4100 3.4522 3.4459 3.5000
External 31/2-14 UNS 2A 0.0018 3.4982 3.4879 - 3.4518 3.4132 3.4132
Internal 2B 3.4380 3.4230 3.4615 3.4536 3.5000
External 31/2-16 UN 2A 0.0017 3.4983 3.4889 - 3.4577 3.4519 3.4238
Internal 2B 3.4460 3.4320 3.4669 3.4594 3.5000
External 31/2-16 UN 3A 0.0000 3.5000 3.4906 - 3.4594 3.4551 3.4255
Internal 3B 3.4408 3.4320 3.4650 3.4594 3.5000
External 31/2-18 UNS 2A 0.0017 3.4983 3.4896 - 3.4622 3.4322 3.4322
Internal 2B 3.4530 3.4400 3.4711 3.4639 3.5000
External 35/8-6 UN 2A 0.0029 3.6221 3.6039 - 3.5138 3.5041 3.4237
Internal 2B 3.4750 3.4450 3.5293 3.5167 3.6250
External 35/8-6 UN 3A 0.0000 3.6250 3.6068 - 3.5167 3.5094 3.4266
Internal 3B 3.4646 3.4450 3.5262 3.5167 3.6250
External 35/8-8 UN 2A 0.0027 3.6223 3.6073 - 3.5411 3.5322 3.4735
Internal 2B 3.5150 3.4900 3.5554 3.5438 3.6250
External 35/8-8 UN 3A 0.0000 3.6250 3.6100 - 3.5438 3.5371 3.4762
Internal 3B 3.5047 3.4900 3.5525 3.5438 3.6250
External 35/8-12 UN 2A 0.0019 3.6231 3.6117 - 3.5690 3.5626 3.5239
Internal 2B 3.5530 3.5350 3.5793 3.5709 3.6250
External 35/8-12 UN 3A 0.0000 3.6250 3.6136 - 3.5709 3.5661 3.5258
Internal 3B 3.5448 3.5350 3.5772 3.5709 3.6250
External 35/8-16 UN 2A 0.0017 3.6233 3.6139 - 3.5827 3.5769 3.5488
Internal 2B 3.5710 3.5570 3.5919 3.5844 3.6250
External 35/8-16 UN 3A 0.0000 3.6250 3.6156 - 3.5844 3.5801 3.5505
Internal 3B 3.5658 3.5570 3.5900 3.5844 3.6250
External 33/4-4 UNC 1A 0.0034 3.7466 3.7109 - 3.5842 3.5674 3.4489
Internal 1B 3.5170 3.4790 3.6094 3.5876 3.7500
External 33/4-4 UNC 2A 0.0034 3.7466 3.7228 3.7109 3.5842 3.5730 3.4489
Internal 2B 3.5170 3.4790 3.6021 3.5876 3.7500
External 33/4-4 UNC 3A 0.0000 3.7500 3.7262 - 3.5876 3.5792 3.4523
Internal 3B 3.5094 3.4790 3.5985 3.5876 3.7500
External 33/4-6 UN 2A 0.0029 3.7471 3.7289 - 3.6388 3.6290 3.5487
Internal 2B 3.6000 3.5700 3.6544 3.6417 3.7500
External 33/4-6 UN 3A 0.0000 3.7500 3.7318 - 3.6417 3.6344 3.5516
Internal 3B 3.5896 3.5700 3.6512 3.6417 3.7500
External 33/4-8 UN 2A 0.0027 3.7473 3.7323 3.7248 3.6661 3.6571 3.5985
Internal 2B 3.6400 3.6150 3.6805 3.6688 3.7500
External 33/4-8 UN 3A 0.0000 3.7500 3.7350 - 3.6688 3.6621 3.6012
Internal 3B 3.6297 3.6150 3.6776 3.6688 3.7500
External 33/4-10 UNS 2A 0.0021 3.7479 3.7350 - 3.6829 3.6289 3.6289
Internal 2B 3.6630 3.6420 3.6940 3.6850 3.7500
External 33/4-12 UN 2A 0.0019 3.7481 3.7367 - 3.6940 3.6876 3.6489
Internal 2B 3.6780 3.6600 3.7043 3.6959 3.7500
External 33/4-12 UN 3A 0.0000 3.7500 3.7386 - 3.6959 3.6911 3.6508
Internal 3B 3.6698 3.6600 3.7022 3.6959 3.7500
External 33/4-14 UNS 2A 0.0018 3.7482 3.7379 - 3.7018 3.6632 3.6632
Internal 2B 3.6880 3.6730 3.7115 3.7036 3.7500
External 33/4-16 UN 2A 0.0017 3.7483 3.7389 - 3.7077 3.7019 3.6738
Internal 2B 3.6960 3.6820 3.7169 3.7094 3.7500
External 33/4-16 UN 3A 0.0000 3.7500 3.7406 - 3.7094 3.7051 3.6755
Internal 3B 3.6908 3.6820 3.7150 3.7094 3.7500
External 33/4-18 UNS 2A 0.0017 3.7483 3.7396 - 3.7122 3.6822 3.6822
Internal 2B 3.7030 3.6900 3.7211 3.7139 3.7500
External 37/8-6 UN 2A 0.0030 3.8720 3.8538 - 3.7637 3.7538 3.6736
Internal 2B 3.7250 3.6950 3.7795 3.7667 3.8750
External 37/8-6 UN 3A 0.0000 3.8750 3.8568 - 3.7667 3.7593 3.6766
Internal 3B 3.7146 3.6950 3.7763 3.7667 3.8750
External 37/8-8 UN 2A 0.0027 3.8723 3.8573 - 3.7911 3.7820 3.7235
Internal 2B 3.7650 3.7400 3.8056 3.7938 3.8750
External 37/8-8 UN 3A 0.0000 3.8750 3.8600 - 3.7938 3.7870 3.7262
Internal 3B 3.7547 3.7400 3.8026 3.7938 3.8750
External 37/8-12 UN 2A 0.0020 3.8730 3.8616 - 3.8189 3.8124 3.7738
Internal 2B 3.8030 3.7850 3.8294 3.8209 3.8750
External 37/8-12 UN 3A 0.0000 3.8750 3.8636 - 3.8209 3.8160 3.7758
Internal 3B 3.7948 3.7850 3.8273 3.8209 3.8750
External 37/8-16 UN 2A 0.0018 3.8732 3.8638 - 3.8326 3.8267 3.7987
Internal 2B 3.8210 3.8070 3.8420 3.8344 3.8750
External 37/8-16 UN 3A 0.0000 3.8750 3.8656 - 3.8344 3.8300 3.8005
Internal 3B 3.8158 3.8070 3.8401 3.8344 3.8750
External 4-4 UNC 1A 0.0034 3.9966 3.9609 - 3.8342 3.8172 3.6989
Internal 1B 3.7670 3.7290 3.8597 3.8376 4.0000
External 4-4 UNC 2A 0.0034 3.9966 3.9728 - 3.8342 3.8229 3.6989
Internal 2B 3.7670 3.7290 3.8523 3.8376 4.0000
External 4-4 UNC 3A 0.0000 4.0000 3.9762 - 3.8376 3.8291 3.7023
Internal 3B 3.7594 3.7290 3.8487 3.8376 4.0000
External 4-6 UN 2A 0.0030 3.9970 3.9788 - 3.8887 3.8788 3.7986
Internal 2B 3.8500 3.8200 3.9046 3.8917 4.0000
External 4-6 UN 3A 0.0000 4.0000 3.9818 - 3.8917 3.8843 3.8016
Internal 3B 3.8396 3.8200 3.9014 3.8917 4.0000
External 4-8 UN 2A 0.0027 3.9973 3.9823 3.9748 3.9161 3.9070 3.8485
Internal 2B 3.8900 3.8650 3.9307 3.9188 4.0000
External 4-8 UN 3A 0.0000 4.0000 3.9850 - 3.9188 3.9120 3.8512
Internal 3B 3.8797 3.8650 3.9277 3.9188 4.0000
External 4-10 UNS 2A 0.0021 3.9979 3.9850 - 3.9329 3.9259 3.8768
Internal 2B 3.9130 3.8920 3.9441 3.9350 4.0000
External 4-12 UN 2A 0.0020 3.9980 3.9866 - 3.9439 3.9374 3.8988
Internal 2B 3.9280 3.9100 3.9544 3.9459 4.0000
External 4-12 UN 3A 0.0000 4.0000 3.9886 - 3.9459 3.9410 3.9008
Internal 3B 3.9198 3.9100 3.9523 3.9459 4.0000
External 4-14 UNS 2A 0.0018 3.9982 3.9879 - 3.9518 3.9456 3.9132
Internal 2B 3.9380 3.9230 3.9616 3.9536 4.0000
External 4-16 UN 2A 0.0018 3.9982 3.9888 - 3.9576 3.9517 3.9237
Internal 2B 3.9460 3.9320 3.9670 3.9594 4.0000
External 4-16 UN 3A 0.0000 4.0000 3.9906 - 3.9594 3.9550 3.9255
Internal 3B 3.9408 3.9320 3.9651 3.9594 4.0000
External thread Nominal size,
TPI, series		 Class Tolerance
(inches)		 Min. major
(inches)		 Max. major
(inches)		 Min.
(inches)		 Min. pitch
(inches)		 Max. pitch
(inches)		 UNR
minor diameter
(inches)
Internal thread Min. minor
(inches)		 Max. minor
(inches)		 Min. major diameter
(inches)

Downloadable: Table of UNC_UNF inch threads.pdf

How to read an inch thread table?

The table of UNC and UNF inch threads provides detailed information to help select the right thread depending on the application. The data in the table covers both male and female threads, including minimum and maximum diameter values and tolerances.

  • Nominal size, TPI, series: An indication of the thread size, the number of threads per inch (TPI – Threads Per Inch) and series (e.g. UNC, UNF), which forms the basis for identifying the thread type.
  • Class: A thread tolerance class that defines the dimensional accuracy of a thread depending on its application. High grades are used where higher precision is required.
  • Tolerance (inches): The range within which variation in thread diameter is allowed, measured in inches. The value of the tolerance is crucial when selecting the correct connection.
  • Min. outside diameter (inches): The minimum external diameter of an external thread, which means the minimum value that the external diameter can take in production or machining.
  • Max. external diameter (inches): The maximum external diameter of the external thread, which means the maximum value that the external diameter can take before it is no longer within tolerance.
  • Min. pitch diameter (inches): The minimum diameter between the external and internal thread turns, crucial for the strength of the connection.
  • Max. pitch diameter (inches): The maximum value of the pitch diameter of a thread, defining the upper range of this value.
  • UNR outside diameter (inches): UNR threads have slightly rounded coils, which increases their resistance to damage. The outside diameter for UNR threads is also subject to standard minimum and maximum values.

For internal threads, the table also includes:

  • Min. internal diameter (inches): Minimum value for the bore diameter for internal threads, which ensures a suitable match to the external thread.
  • Max. internal diameter (inches): The maximum bore diameter of the internal thread, which should not be exceeded in order to maintain a standard-compliant connection.

Example of line reading for 1/4-20 UNC male thread:

  • Nominal size, TPI, series: 1/4″, 20 TPI, UNC
  • Class: 2A
  • Tolerance (inches): ±0.001
  • Min. outside diameter: 0.2380″
  • Max. outside diameter: 0.2500″
  • Min. pitch diameter: 0.2175″
  • Max. pitch diameter: 0.2200″

Use of inch threads in practice

UNC and UNF inch threads are widely used in various industries, including automotive, mechanical engineering, and aerospace. The use of these standards guarantees high connection strength and assembly precision.

Examples of applications:

  • UNC: in the manufacture of large machinery, structural components where greater strength and vibration resistance are required.
  • UNF: in high-precision applications such as aerospace fasteners, for projects requiring accuracy.