OverallPinBored holeBored hole dia.Bored holeBored holeShankSize ofLength of
lengthlengthdia.(GO)(NOT-GO)depth(1.5D)depth( 2D)dia.squaresquare
Ld₁d₂ℓ₁ℓ₂DsKℓk

CPC-T

Check Pins for Bored Holes in thread cut tapping (Taper Type)

Specification

■ One CPC-T enables simple checking of bored hole dia. ( for cutting taps, taper type ).CPC-T is made from wear resistant HSS material and is applicable for through hole and for blind hole having enough space in the bottom. For icon explanation, refer to P.50

TYPE:1 TYPE:2

Segment:7C

Ld1(inch)d2(inch)DsKℓk
SizeCode12Type Stock
(inch)(inch)(Thread engagement ratio)(Thread engagement ratio) (inch)(inch)(inch)(inch)(inch)

For Unified Threads

No.2-56UNCCPCTAUN2E1.650.280.0667(83.1%)0.0737(53.2%)0.039 0.236 0.118 0.100.201
No.2-64UNFCPCTAUN2D1.650.280.0691(83.1%)0.0753(52.8%)0.039 0.236 0.118 0.100.201
No.3-48UNCCPCTAUN3F1.810.310.0764(83.4%)0.0845(53.6%)0.059 0.256 0.118 0.100.201
No.3-56UNFCPCTAUN3E1.810.310.0797(83.1%)0.0865(53.9%)0.059 0.256 0.118 0.100.201
No.4-40UNCCPCTAUN4H1.810.310.0849(83.4%)0.0939(55.7%)0.059 0.256 0.118 0.100.201
No.4-48UNFCPCTAUN4F1.810.310.0894(83.5%)0.0968(56.3%)0.059 0.256 0.118 0.100.201
No.5-40UNCCPCTAUN5H1.810.330.0979(83.4%)0.1062(57.9%)0.059 0.276 0.157 0.130.241
No.5-44UNFCPCTAUN5G1.810.330.1004(83.2%)0.1079(58.0%)0.059 0.276 0.157 0.130.241
No.6-32UNCCPCTAUN6J1.810.330.1040(83.7%)0.1140(59.2%)0.059 0.276 0.157 0.130.241
No.6-40UNFCPCTAUN6H1.810.330.1110(83.1%)0.1186(59.7%)0.059 0.276 0.157 0.130.241
No.8-32UNCCPCTAUN8J2.050.410.1300(83.8%)0.1389(61.8%)0.091 0.327 0.197 0.160.281
No.8-36UNFCPCTAUN8I2.050.410.1340(83.1%)0.1416(62.1%)0.091 0.327 0.197 0.160.281
No.10-24UNCCPCTAUNAM2.340.490.1450(83.1%)0.1555(63.7%)0.098 0.394 0.217 0.180.281
No.10-32UNFCPCTAUNAJ2.340.490.1560(83.7%)0.1641(63.8%)0.098 0.394 0.217 0.180.281
No.12-24UNCCPCTAUNCM2.340.490.1710(83.1%)0.1807(65.2%)0.098 0.394 0.217 0.180.281
No.12-28UNFCPCTAUNCK2.340.490.1770(84.0%)0.1857(65.3%)0.098 0.394 0.217 0.180.281
1/4-20UNCCPCTAU04N2.420.650.1960(83.1%)0.2067(66.7%)0.150 0.504 0.236 0.180.281
1/4-28UNFCPCTAU04K2.420.650.2110(84.0%)0.2190(66.8%)0.150 0.504 0.236 0.180.281
5/16-18UNCCPCTAU05O3.540.760.2520(83.8%)0.2630(68.6%)0.185 0.579 0.315 0.240.352
5/16-24UNFCPCTAU05M3.540.760.2670(84.0%)0.2754(68.5%)0.185 0.579 0.315 0.240.352
3/8-16UNCCPCTAU06P3.940.920.3070(83.7%)0.3182(70.0%)0.264 0.657 0.394 0.310.432
3/8-24UNFCPCTAU06M3.940.920.3300(83.1%)0.3372(69.8%)0.264 0.657 0.394 0.310.432
7/16-14UNCCPCTAU07Q4.331.080.3600(83.5%)0.3717(70.9%)0.303 0.776 0.472 0.350.472
7/16-20UNFCPCTAU07N4.331.080.3830(83.9%)0.3916(70.7%)0.303 0.776 0.472 0.350.472
1/2-13UNCCPCTAU08R4.331.080.4170(83.1%)0.4284(71.7%)0.303 0.776 0.472 0.350.472
1/2-20UNFCPCTAU08N4.331.080.4460(83.1%)0.4537(71.3%)0.303 0.776 0.472 0.350.472