
Overall length L Thread length ℓ Thread + Neck length ℓn Shank dia. Ds Size of square K Length of square ℓk ③ 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.10-32UNF GH3 Y85510 4.5P 2.375 0.531 0.875 0.194 0.152 0.25 3 1 Cemented Carbide Taps No.10-32UNF GH4 Y85530 4.5P 2.375 0.531 0.875 0.194 0.152 0.25 3 1 ⑤ No.10-32UNF GH5 Y85540 4.5P 2.375 0.531 0.875 0.194 0.152 0.25 3 1 No.10-32UNF GH6 Y85561 4.5P 2.375 0.531 0.875 0.194 0.152 0.25 3 1 No.10-32UNF GH7 Y85570 4.5P 2.375 0.531 0.875 0.194 0.152 0.25 3 1 1/4-20UNC GH3 Y85513 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 Roll Taps ⑥ 1/4-20UNC GH5 Y85543 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH3 Y85514 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH4 Y85531 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH5 Y85544 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF Special Thread Taps Simple Inspection Tools GH6 Y85562 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 ⑦ 1/4-28UNF GH7 Y85574 4.5P 2.5 0.591 1 0.255 0.191 0.312 3 2 5/16-18UNC GH3 Y85515 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-18UNC GH5 Y85545 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-18UNC GH7 Y85553 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 Pipe Taps 5/16-24UNF GH3 Y85516 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 ⑧ 5/16-24UNF GH4 Y85532 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH5 Y85546 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH6 Y85563 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH7 Y85576 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 Thread Mills Premium Thread Mills 3/8-16UNC ⑨ GH3 Y85517 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-16UNC GH5 Y85547 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH3 Y85518 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH4 Y85533 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH5 Y85548 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 Dies ⑩ 3/8-24UNF GH6 Y85564 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH7 Y85578 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 7/16-14UNC GH3 Y85519 4.5P 3.156 0.866 - 0.323 0.242 0.406 3 4 7/16-14UNC GH5 Y85549 4.5P 3.156 0.866 - 0.323 0.242 0.406 3 4 Center Drills Centering Tools 7/16-20UNF GH3 Y85520 4.5P 3.156 0.866 - 0.323 0.242 0.406 3 4 ⑪ 7/16-20UNF GH5 Y85550 4.5P 3.156 0.866 - 0.323 0.242 0.406 3 4 1/2-13UNC GH3 Y85521 4.5P 3.375 0.984 - 0.367 0.275 0.437 3 4 ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ③-88