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.squaresquareLℓℓnDsKℓk① ANSI Size Class Code Chamfer L (inch) ℓ(inch) ℓn(inch) Ds(inch) K(inch) ℓk(inch) No. offlutes TYPE5/8-18UNFGH3Y844262.5P3.8120.512-0.480.360.56234 ① 3/4-10UNC GH3 Y84427 2.5P 4.25 0.827 - 0.59 0.442 0.687 4 4 3/4-16UNF GH3 Y84428 2.5P 4.25 0.591 - 0.59 0.442 0.687 4 4 ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ①-178