Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools Overall Thread Thread + Neck Shank Size of Length oflengthlengthlengthdia.squaresquareLℓℓnDsKℓk② ANSI TYPE:1 TYPE:2 ① ② TYPE:3 TYPE:4 ③ ④ Size Class Code Chamfer L (inch) ℓ(inch) ℓn(inch) Ds(inch) K(inch) ℓk(inch) No. offlutes TYPE 1/4-20UNC GH5 Y85643 5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH3 Y85614 5P 2.5 0.591 1 0.255 0.191 0.312 3 2 ⑤ 1/4-28UNF GH4 Y85631 5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH5 Y85644 5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH6 Y85662 5P 2.5 0.591 1 0.255 0.191 0.312 3 2 1/4-28UNF GH7 Y85674 5P 2.5 0.591 1 0.255 0.191 0.312 3 2 5/16-18UNC GH3 Y85615 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 ⑥ 5/16-18UNC GH5 Y85645 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH3 Y85616 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH4 Y85632 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH5 Y85646 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 5/16-24UNF GH6 Y85663 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 ⑦ 5/16-24UNF GH7 Y85676 5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 3/8-16UNC GH3 Y85617 5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-16UNC GH5 Y85647 5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH3 Y85618 5P 2.937 0.748 1.25 0.381 0.286 0.437 3 33/8-24UNFGH4Y856335P2.9370.7481.250.3810.2860.43733 ⑧ 3/8-24UNF GH5 Y85648 5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH6 Y85664 5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 3/8-24UNF GH7 Y85678 5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 7/16-14UNC GH3 Y85619 5P 3.156 0.866 - 0.323 0.242 0.406 3 4 ⑨ 7/16-14UNC GH5 Y85649 5P 3.156 0.866 - 0.323 0.242 0.406 3 4 7/16-20UNF GH3 Y85620 5P 3.156 0.866 - 0.323 0.242 0.406 3 4 7/16-20UNF GH5 Y85650 5P 3.156 0.866 - 0.323 0.242 0.406 3 4 1/2-13UNC GH3 Y85621 5P 3.375 0.984 - 0.367 0.275 0.437 3 4 1/2-13UNC GH5 Y85651 5P 3.375 0.984 - 0.367 0.275 0.437 3 4 ⑩ 1/2-20UNF GH3 Y85622 5P 3.375 0.984 - 0.367 0.275 0.437 3 4 1/2-20UNF GH5 Y85652 5P 3.375 0.984 - 0.367 0.275 0.437 3 4 5/8-11UNC GH3 Y85625 5P 3.812 1.083 - 0.48 0.36 0.562 3 4 5/8-18UNF GH3 Y85626 5P 3.812 1.083 - 0.48 0.36 0.562 3 43/4-10UNCGH3Y856275P4.251.201-0.590.4420.68734 ⑪ 3/4-16UNF GH3 Y85628 5P 4.25 1.201 - 0.59 0.442 0.687 3 4 ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ②-22