Overall lengthThread lengthShank dia. Size of squareLength of square
T-CI HandTaps for Cast IronsLDs Kℓk
SizeClassCodeChamferL (inch)ℓ (inch)Ds (inch)K (inch)ℓk (inch)No. of flutesType
7/16-20UNFGH5Y86025 Y860264P 1.5P3.1561.4370.3230.2420.40643
1/2-13UNCGH3 GH5Y86027 Y86028 Y86029 Y860304P 1.5P 4P 1.5P3.3751.6560.3670.2750.43743
1/2-20UNFGH3 GH5Y86031 Y86032 Y86033 Y860344P 1.5P 4P 1.5P3.3751.6560.3670.2750.43743
9/16-12UNCGH3Y86035 Y860364P 1.5P3.5931.6560.4290.3220.543
9/16-18UNFGH3Y86037 Y860384P 1.5P3.5931.6560.4290.3220.543
5/8-11UNCGH3Y86039 Y860404P 1.5P3.8121.8120.480.360.56243
5/8-18UNFGH3Y86041 Y860424P 1.5P3.8121.8120.480.360.56243
3/4-10UNCGH3Y86043 Y860444P 1.5P4.252.0000.590.4220.68743
3/4-16UNFGH3Y86045 Y860464P 1.5P4.252.0000.590.4220.68743