
Overall length L Thread length ℓ Thread + Neck ℓn length Shank dia. Ds Size of square K Length of square ℓk ① 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 L ℓ ℓn Ds K ℓk No. of Size Class Code Chamfer TYPE (inch) (inch) (inch) (inch) (inch) (inch) flutes No.8-32UNC GH3 Y87580 1.5P 2.125 0.276 0.75 0.168 0.131 0.25 3 1 Cemented Carbide Taps No.8-32UNC GH4 Y87529 3P 2.125 0.276 0.75 0.168 0.131 0.25 3 1 ⑤ No.8-32UNC GH5 Y87537 3P 2.125 0.276 0.75 0.168 0.131 0.25 3 1 No.8-32UNC GH5 Y87037 1.5P 2.125 0.276 0.75 0.168 0.131 0.25 3 1 No.8-32UNC GH6 Y87560 3P 2.125 0.276 0.75 0.168 0.131 0.25 3 1 No.8-32UNC GH7 Y87567 3P 2.125 0.276 0.75 0.168 0.131 0.25 3 1 Roll Taps ⑥ No.10-24UNC GH3 Y87509 3P 2.375 0.354 0.875 0.194 0.152 0.25 3 1 No.10-24UNC GH3 Y87009 1.5P 2.375 0.354 0.875 0.194 0.152 0.25 3 1 No.10-24UNC GH5 Y87539 3P 2.375 0.354 0.875 0.194 0.152 0.25 3 1 No.10-32UNF GH2 Y87511 3P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 No.10-32UNF Special Thread Taps Simple Inspection Tools GH3 Y87510 3P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 ⑦ No.10-32UNF GH3 Y81556 1.5P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 No.10-32UNF GH4 Y87530 3P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 No.10-32UNF GH5 Y87540 3P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 No.10-32UNF GH5 Y87040 1.5P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 Pipe Taps No.10-32UNF GH6 Y87561 3P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 ⑧ No.10-32UNF GH7 Y87570 3P 2.375 0.276 0.875 0.194 0.152 0.25 3 1 1/4-20UNC GH3 Y87513 3P 2.5 0.433 1 0.255 0.191 0.312 3 2 1/4-20UNC GH3 Y87013 1.5P 2.5 0.433 1 0.255 0.191 0.312 3 2 1/4-20UNC GH5 Y87543 3P 2.5 0.433 1 0.255 0.191 0.312 3 2 Thread Mills Premium Thread Mills 1/4-20UNC ⑨ GH5 Y87043 1.5P 2.5 0.433 1 0.255 0.191 0.312 3 2 1/4-28UNF GH3 Y87514 3P 2.5 0.354 1 0.255 0.191 0.312 3 2 1/4-28UNF GH3 Y87579 1.5P 2.5 0.354 1 0.255 0.191 0.312 3 2 1/4-28UNF GH4 Y87531 3P 2.5 0.354 1 0.255 0.191 0.312 3 2 1/4-28UNF GH4 Y87031 1.5P 2.5 0.354 1 0.255 0.191 0.312 3 2 Dies ⑩ 1/4-28UNF GH5 Y87544 3P 2.5 0.354 1 0.255 0.191 0.312 3 2 1/4-28UNF GH5 Y87443 1.5P 2.5 0.354 1 0.255 0.191 0.312 3 2 1/4-28UNF GH6 Y87562 3P 2.5 0.354 1 0.255 0.191 0.312 3 2 1/4-28UNF GH7 Y87574 3P 2.5 0.354 1 0.255 0.191 0.312 3 2 Center Drills Centering Tools 5/16-18UNC GH3 Y87515 3P 2.718 0.472 1.125 0.318 0.238 0.375 3 3 ⑪ 5/16-18UNC GH3 Y87015 1.5P 2.718 0.472 1.125 0.318 0.238 0.375 3 3 5/16-18UNC GH5 Y87545 3P 2.718 0.472 1.125 0.318 0.238 0.375 3 3 5/16-18UNC GH5 Y87045 1.5P 2.718 0.472 1.125 0.318 0.238 0.375 3 3 ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ①-162