OverallPinBored holeBored hole dia.Bored holeBored holeBored holeShank
lengthlengthdia.(GO)(NOT-GO)depth(1.5D)depth( 2D)depth( 2.5D)dia.
Ld₁d₂ℓ₁ℓ₂ℓ₃Ds
SizeCodeL (inch)ℓ (inch)d1(inch) (Thread engagement ratio)d2(inch) (Thread engagement ratio) ℓ1 (inch)ℓ2 (inch)ℓ3 (inch)Ds (inch)TypeStockSpiral (for b
CPCSAUN6HA0.1110(83.1%)0.1148(71.4%)Flut lind h
CPCSAUN6HB0.1128(77.6%)0.1167(65.6%)ed T ole
No.6-40UNFCPCSAUN6HC1.930.350.1147(71.7%)0.1186(59.7%)0.2070.2760.3450.1571aps )
CPCSAUN6HD0.1166(65.9%)0.1205(53.9%)Spira (for t
CPCSAUN8JA0.1300(83.8%)0.1345(72.7%)l Flu hrou
CPCSAUN8JB0.1324(77.8%)0.1367(67.2%)ted gh
No.8-32UNCCPCSAUN8JC2.240.430.1346(72.4%)0.1389(61.8%)0.2460.3280.4100.1971Taps hole)
CPCSAUN8JD0.1367(67.2%)0.1410(56.7%)Spi (fo
CPCSAUN8IA0.1340(83.1%)0.1377(72.9%)ral P r thr
No.8-36UNFCPCSAUN8IB CPCSAUN8IC2.240.430.1359(77.9%) 0.1378(72.6%)0.1397(67.3%) 0.1416(62.1%)0.2460.3280.4100.1971ointed Ta ough hole
CPCSAUN8ID0.1397(67.3%)0.1435(56.8%)H ps )
CPCSAUNAMA0.1450(83.1%)0.1502(73.5%)and
No.10-24UNCCPCSAUNAMB CPCSAUNAMC CPCSAUNAMD2.560.550.1475(78.5%) 0.1502(73.5%) 0.1528(68.7%)0.1528(68.7%) 0.1555(63.7%) 0.1581(58.9%)0.2850.3800.4750.2171Taps
CPCSAUNAJA0.1560(83.7%)0.1601(73.7%)Cem Car
CPCSAUNAJB0.1581(78.6%)0.1621(68.7%)en bid
No.10-32UNFCPCSAUNAJC2.560.550.1601(73.7%)0.1641(63.8%)0.2850.3800.4750.2171ted e Ta
CPCSAUNAJD0.1621(68.7%)0.1661(58.9%)ps
CPCSAUNCMA0.1710(83.1%)0.1758(74.3%)Ro
No.12-24UNCCPCSAUNCMB CPCSAUNCMC CPCSAUNCMD2.560.550.1733(78.9%) 0.1758(74.3%) 0.1782(69.8%)0.1782(69.8%) 0.1807(65.2%) 0.1831(60.8%)0.3240.4320.5400.2171ll Taps
CPCSAUNCKA CPCSAUNCKB0.1770(84.0%) 0.1794(78.9%)0.1815(74.4%) 0.1836(69.8%)Simpl
No.12-28UNFCPCSAUNCKC2.560.550.1815(74.4%)0.1857(65.3%)0.3240.4320.5400.2171e Inspe
CPCSAUNCKD0.1836(69.8%)0.1878(60.8%)ction T
CPCSAU04NA0.1960(83.1%)0.2013(75.0%)ools
1/4-20UNCCPCSAU04NB CPCSAU04NC2.870.650.1986(79.2%) 0.2013(75.0%)0.2040(70.8%) 0.2067(66.7%)0.3750.5000.6250.2361Pipe T
CPCSAU04ND0.2040(70.8%)0.2094(62.5%)aps
CPCSAU04KA0.2110(84.0%)0.2152(75.0%)
1/4-28UNFCPCSAU04KB CPCSAU04KC2.870.650.2131(79.5%) 0.2150(75.4%)0.2171(70.8%) 0.2190(66.8%)0.3750.5000.6250.2361Threa
CPCSAU04KD0.2169(71.3%)0.2209(62.7%)d Mi
CPCSAU05OA0.2520(83.8%)0.2577(75.9%)lls
5/16-18UNCCPCSAU05OB CPCSAU05OC3.900.870.2551(79.5%) 0.2577(75.9%)0.2604(72.2%) 0.2630(68.6%)0.4690.6250.7810.3151Dies
CPCSAU05OD0.2604(72.2%)0.2657(64.8%)
CPCSAU05MA0.2670(84.0%)0.2714(75.9%)
CPCSAU05MB0.2694(79.6%)0.2734(72.2%)
5/16-24UNFCPCSAU05MC3.900.870.2714(75.9%)0.2754(68.5%)0.4690.6250.7810.3151Cen
CPCSAU05MD0.2734(72.2%)0.2774(64.8%)ter
CPCSAU06PA0.3070(83.7%)0.3127(76.7%)Drill
3/8-16UNCCPCSAU06PB4.331.080.3101(79.9%)0.3155(73.3%)0.5630.7500.9380.3941C s
CPCSAU06PC CPCSAU06PD0.3128(76.6%) 0.3155(73.3%)0.3182(70.0%) 0.3209(66.6%)enteri
3/824UNFCPCSAU06MA4331080.3300(83.1%)0.3336(76.5%)05630750093803941ng T
-CPCSAU06MB..0.3314(80.6%)0.3354(73.2%)....ools