|
| Standard
Pitch diameters for Unified
Inch Thread Ring & Set Plug Gages |
| NOMINAL
SIZE | 2A
GO | 2A
NOGO | 3A
GO | 3A
NOGO | # 0-80
UNF | .0514 | .0496 | .0519 | .0506 |
# 1-64
UNC | .0623 | .0603 | .0629 | .0614 |
# 1-72
UNF | .0634 | .0615 | .0640 | .0626 |
# 2-56
UNC | .0738 | .0717 | .0744 | .0728 |
# 2-64
UNF | .0753 | .0733 | .0759 | .0744 |
# 3-48
UNC | .0848 | .0825 | .0855 | .0838 |
# 3-56
UNF | .0867 | .0845 | .0874 | .0858 |
# 4-40
UNC | .0950 | .0925 | .0958 | .0939 |
#
4-48
UNF | .0978 | .0954 | .0985 | .0967 |
# 5-40
UNC | .1080 | .1054 | .1088 | .1069 |
# 5-44
UNF | .1095 | .1070 | .1102 | .1083 |
# 6-32
UNC | .1169 | .1141 | .1177 | .1156 |
# 6-40
UNF | .1210 | .1184 | .1218 | .1198 |
# 8-32
UNC | .1428 | .1399 | .1437 | .1415 |
# 8-36
UNF | .1452 | .1424 | .1460 | .1439 |
# 10-24
UNC | .1619 | .1586 | .1629 | .1604 |
# 10-32
UNF | .1688 | .1658 | .1697 | .1674 |
# 12-24
UNC | .1879 | .1845 | .1889 | .1863 |
# 12-28
UNF | .1918 | .1886 | .1928 | .1904 |
# 12-32
UNEF | .1948 | .1917 | .1957 | .1933 |
1/4"-20
UNC | .2164 | .2127 | .2175 | .2147 |
1/4"-28
UNF | .2258 | .2225 | .2268 | .2243 |
1/4"-32
UNEF | .2287 | .2255 | .2297 | .2273 |
5/16"-18
UNC | .2752 | .2712 | .2764 | .2734 |
5/16"-24
UNF | .2843 | .2806 | .2854 | .2827 |
5/16"-32
UNEF | .2912 | .2880 | .2922 | .2898 |
3/8"-16
UNC | .3331 | .3287 | .3344 | .3311 |
3/8"-24
UNF | .3468 | .3430 | .3479 | .3450 |
3/8"-32
UNEF | .3537 | .3503 | .3547 | .3522 |
7/16"-14
UNC | .3897 | .3850 | .3911 | .3876 |
7/16"-20
UNF | .4037 | .3995 | .4050 | .4019 |
7/16"-28
UNEF | .4132 | .4096 | .4143 | .4116 |
1/2"-13
UNC | .4485 | .4435 | .4500 | .4463 |
1/2"-20
UNF | .4662 | .4619 | .4675 | .4643 |
1/2"-28
UNEF | .4757 | .4720 | .4768 | .4740 |
9/16"-12
UNC | .5068 | .5016 | .5084 | .5045 |
9/16"-18
UNF | .5250 | .5205 | .5264 | .5230 |
9/16"-24
UNEF | .5342 | .5303 | .5354 | .5325 |
5/8"-11
UNC | .5644 | .5589 | .5660 | .5619 |
5/8"-18
UNF | .5875 | .5828 | .5889 | .5854 |
5/8"-24
UNEF | .5967 | .5927 | .5979 | .5949 |
11/16"-24
UNEF | .6592 | .6552 | .6604 | .6574 |
3/4"-10
UNC | .6832 | .6773 | .6850 | .6806 |
3/4"-16
UNF | .7079 | .7029 | .7094 | .7056 |
3/4"-20
UNEF | .7162 | .7118 | .7175 | .7142 |
13/16"-20
UNEF | .7787 | .7743 | .7800 | .7767 |
7/8"-9
UNC | .8009 | .7946 | .8028 | .7981 |
7/8"-14
UNF | .8270 | .8216 | .8286 | .8245 |
7/8"-20
UNEF | .8412 | .8368 | .8425 | .8392 |
15/16"-20
UNEF | .9036 | .8991 | .9050 | .9016 |
1"-8
UNC | .9168 | .9100 | .9188 | .9137 |
1"-12
UNF | .9441 | .9382 | .9459 | .9415 |
1"-14
UNS | .9519 | .9463 | .9536 | .9494 |
1"-20
UNEF | .9661 | .9616 | .9675 | .9641 |
1-1/16"-12
UN | 1.0067 | 1.0010 | 1.0084 | 1.0042 |
1-1/16"-18
UNEF | 1.0250 | 1.0203 | 1.0264 | 1.0228 |
1-1/8"-7
UNC | 1.0300 | 1.0228 | 1.0322 | 1.0268 |
1-1/8"-12
UNF | 1.0691 | 1.0631 | 1.0709 | 1.0664 |
1-1/8"-18
UNEF | 1.0875 | 1.0828 | 1.0889 | 1.0853 |
1-3/16"-12
UN | 1.1317 | 1.1259 | 1.1334 | 1.1291 |
1-3/16"-18
UNEF | 1.1499 | 1.1450 | 1.1514 | 1.1478 |
1-1/4"-7
UNC | 1.1550 | 1.1476 | 1.1572 | 1.1517 |
1-1/4"-12
UNF | 1.1941 | 1.1879 | 1.1959 | 1.1913 |
1-1/4"-18
UNEF | 1.2124 | 1.2075 | 1.2139 | 1.2103 |
1-5/16"-12
UN | 1.2567 | 1.2509 | 1.2584 | 1.2541 |
1-5/16"-18
UNEF | 1.2749 | 1.2700 | 1.2764 | 1.2728 |
1-3/8"-6
UNC | 1.2643 | 1.2563 | 1.2667 | 1.2607 |
1-3/8"-12
UNF | 1.3190 | 1.3127 | 1.3209 | 1.3162 |
1-3/8"-18
UNEF | 1.3374 | 1.3325 | 1.3389 | 1.3353 |
1-7/16"-12
UN | 1.3816 | 1.3757 | 1.3834 | 1.3790 |
1-7/16"-18
UNEF | 1.3999 | 1.3949 | 1.4014 | 1.3977 |
1-1/2"-6
UNC | 1.3893 | 1.3812 | 1.3917 | 1.3856 |
1-1/2"-12
UNF | 1.4440 | 1.4376 | 1.4459 | 1.4411 |
1-1/2"-18
UNEF | 1.4624 | 1.4574 | 1.4639 | 1.4602 |
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