Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ⑥ ANSI TYPE:1 TYPE:2 Spiral Fluted Taps (for blind hole) ① Spiral Fluted Taps (for through hole) ② TYPE:3 TYPE:4 Spiral Pointed Taps (for through hole) ③ Hand Taps ④ Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe TYPE (inch) (inch) (inch) (inch) (inch) (inch) (inch) No.4-40UNC H5 386805M 2P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 4 2 Cemented Carbide Taps No.4-48UNF H3 386806M 2P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 4 2 ⑤ No.4-48UNF H5 386807M 2P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 4 2 No.5-40UNC H5 386799M 2P 2.205 0.433 0.736 1.339 0.141 0.11 0.187 4 2 No.6-32UNC H3 386810M 4P 2.205 0.433 0.748 1.339 0.141 0.11 0.187 4 2 No.6-32UNC H3 386808M 2P 2.205 0.433 0.748 1.339 0.141 0.11 0.187 4 2 Roll Taps ⑥ No.6-32UNC H5 386811M 4P 2.205 0.433 0.748 1.339 0.141 0.11 0.187 4 2 No.6-32UNC H5 386809M 2P 2.205 0.433 0.748 1.339 0.141 0.11 0.187 4 2 No.8-32UNC H3 386814M 4P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 4 2 No.8-32UNC H3 386812M 2P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 4 2 No.8-32UNC Special Thread Taps Simple Inspection Tools H5 386815M 4P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 4 2 ⑦ No.8-32UNC H5 386813M 2P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 4 2 No.10-24UNC H4 386818M 4P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 No.10-24UNC H4 386816M 2P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 No.10-24UNC H6 386819M 4P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 Pipe Taps No.10-24UNC H6 386817M 2P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 ⑧ No.10-32UNF H4 386822M 4P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 No.10-32UNF H4 386820M 2P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 No.10-32UNF H6 386823M 4P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 No.10-32UNF H6 386821M 2P 2.756 0.551 0.945 1.654 0.194 0.152 0.25 4 2 Thread Mills Premium Thread Mills 1/4-20UNC ⑨ H4 386826M 4P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 1/4-20UNC H4 386824M 2P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 1/4-20UNC H6 386827M 4P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 1/4-20UNC H6 386825M 2P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 1/4-28UNF H4 386830M 4P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 Dies ⑩ 1/4-28UNF H4 386828M 2P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 1/4-28UNF H6 386831M 4P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 1/4-28UNF H6 386829M 2P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 5/16-18UNC H5 386834M 4P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 Center Drills Centering Tools 5/16-18UNC H5 386832M 2P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 ⑪ 5/16-18UNC H7 386835M 4P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 5/16-18UNC H7 386833M 2P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 5/16-24UNF H5 386838M 4P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ⑥-52