Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk HT OX (for blind hole) Spiral Fluted Taps Hand Taps, Oxided Specification (for through hole) Spiral Fluted Taps E Oxide 1 1/8U ~ Recommended Tapping Speed depending on Materials (for through hole) Spiral Pointed Taps Medium carbon steels 5〜10 For icon explanation, refer to P.50 TYPE:1 TYPE:e2 Hand Taps Carbide Taps Cemented TYPE:3e TYPE:4 Roll Taps Segment:1A Simple Inspection Tools Pipe Taps Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type (inch) (inch) (inch) (inch) (inch) (mm) (mm) flutes For Unified Threads TSUN0B1NEX5 5P GH1 TSUN0B1NEXA 1.5P No.0-80UNF 1.772 0.236 - 1.161 0.141 0.11 0.187 2 1 TSUN0B2NEX5 5P Thread Mills GH2 TSUN0B2NEXA 1.5P TSUN1D1NEX5 5P GH1 TSUN1D1NEXA 1.5P No.1-64UNC 1.772 0.275 - 1.161 0.141 0.11 0.187 2 1 TSUN1D2NEX5 5P GH2 Dies TSUN1D2NEXA 1.5P TSUN1C1NEX5 5P GH1 TSUN1C1NEXA 1.5P NO.1-72UNF 1.772 0.275 - 1.161 0.141 0.11 0.187 2 1 TSUN1C2NEX5 5P GH2 TSUN1C2NEXA 1.5P Center Drills TSUN2E1NEX5 5P GH1 TSUN2E1NEXA 1.5P No.2-56UNC 1.772 0.314 - 1.161 0.141 0.11 0.187 3 1 TSUN2E2NEX5 5P GH2 TSUN2E2NEXA 1.5P Centering Tools TSUN2D1NEX5 5P GH1 TSUN2D1NEXA 1.5P NO.2-64UNF 1.772 0.314 - 1.161 0.141 0.11 0.187 3 1 TSUN2D2NEX5 5P GH2 TSUN2D2NEXA 1.5P ANSI HT-8 259