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 ANSI ⑦ Special Thread Taps / Simple Inspection Tools Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk ANSI ① PO STI Spiral Pointed Taps for Helical Coil Wire Screw Thread Inserts ② Specification ■Spiral pointed tap to cut internal threads for helical coil to enter. ③ Recommended Tapping Speed depending on Materials Brass Brass castings Bronze Wrought aluminum Aluminum alloy castings Magnesium alloy die castings Zinc alloy castings 黄銅 黄銅鋳物 青銅 アルミ圧延材 アルミ合金鋳物 マグネシウム合金鋳物 亜鉛合金鋳物 5〜15 5〜15 5〜15 5〜15 5〜15 5〜15 5〜15 ④ (m/min) (m/min) (m/min) (m/min) (m/min) (m/min) (m/min) TYPE:1 ⑤ ⑥ TYPE:2 TYPE:3 ⑦ Segment:1E ⑧ Size Class Code Chamfer L(inch) ℓ(inch) ℓn(inch) ℓs(inch) Ds(inch) K(inch) ℓk(inch) No. offlutes TYPEFor Unified Threads  No.2-56UNC GH1 PUUN2E1NEB 5P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 2 1 No.2-56UNC GH2 PUUN2E2NEB 5P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 2 1 No.4-40UNC GH1 PUUN4H1NEB 5P 2.48 0.512 0.827 1.496 0.168 0.131 0.25 2 1 ⑨ No.4-40UNC GH2 PUUN4H2NEB 5P 2.48 0.512 0.827 1.496 0.168 0.131 0.25 2 1 No.6-32UNC GH1 PUUN6J1NEB 5P 2.756 0.551 0.945 1.654 0.194 0.131 0.25 2 1 No.6-32UNC GH2 PUUN6J2NEB 5P 2.756 0.551 0.945 1.654 0.194 0.131 0.25 2 1 No.8-32UNC GH1 PUUN8J1NEB 5P 3.15 0.591 0.984 1.929 0.22 0.165 0.281 2 1 No.8-32UNC GH2 PUUN8J2NEB 5P 3.15 0.591 0.984 1.929 0.22 0.165 0.281 2 1 ⑩ No.10-24UNC GH2 PUUNAM2NEB 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 2 1 No.10-24UNC GH3 PUUNAM3NEB 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 2 1 No.10-32UNF GH2 PUUNAJ2NEB 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 2 1 No.10-32UNF GH3 PUUNAJ3NEB 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 2 1 1/4-20UNC GH2 PUU04N2NEB 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 2 2 ⑪ 1/4-20UNC GH3 PUU04N3NEB 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 2 2 1/4-28UNF GH2 PUU04K2NEB 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 2 2 1/4-28UNF GH3 PUU04K3NEB 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 2 2 ANSI ⑦-19 ※ This product is different from JIS products in shape and dimensions, please be careful when using.