Simple Inspection Tools

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)TypeStock
3/8-24UNFCPCSAU06MC CPCSAU06MD4.331.080.3332(77.2%) 0.3351(73.7%)0.3372(69.8%) 0.3391(66.3%)0.5630.7500.9380.3941
CPCSAU07QA0.3600(83.5%)0.3660(77.1%)
CPCSAU07QB0.3630(80.3%)0.3688(74.0%)
7/16-14UNCCPCSAU07QC4.761.300.3659(77.2%)0.3717(70.9%)0.6560.8751.0940.4721
CPCSAU07QD0.3688(74.0%)0.3746(67.8%)
CPCSAU07NA0.3830(83.9%)0.3875(77.0%)
CPCSAU07NB4761300.3855(80.1%)0.3896(73.7%)06560875109404721
7/16-20UNFCPCSAU07NC..0.3875(77.0%)0.3916(70.7%)....
CPCSAU07ND0.3896(73.7%)0.3937(67.4%)
CPCSAU08RA0.4170(83.1%)0.4225(77.6%)
CPCSAU08RB4761300.4196(80.5%)0.4254(74.7%)07501000125004721
1/2-13UNCCPCSAU08RC..0.4226(77.5%)0.4284(71.7%)....
CPCSAU08RD0.4255(74.6%)0.4313(68.8%)
CPCSAU08NA0.4460(83.1%)0.4498(77.3%)
1/220UNFCPCSAU08NB4761300.4477(80.5%)0.4517(74.4%)07501000125004721
-CPCSAU08NC..0.4497(77.4%)0.4537(71.3%)....
CPCSAU08ND0.4516(74.5%)0.4556(68.4%)