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