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Setting Plug Reference Sheet

Alpha Thread Gage, Inc.

Mailing address:
  PO Box 261
 

 Royal Oak, MI  
  48068-0261

E-MAIL: alphathread@aol.com

Leading the pack in the thread gage industry.

 

PHONE (248) 585-5800 · FAX (248) 583-9800

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REFERENCE SHEET

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

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