Spiral Pointed Tap Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk Spiral Fluted Taps (for blind hole) PO OX Spiral Pointed Taps, Oxided Spiral Fluted Taps (for through hole) Specification E Oxide 1 1/8U ~ Spiral Pointed Taps (for through hole) Recommended Tapping Speed depending on Materials ow carbon steels Medium carbon steels 5〜10 5〜10 For icon explanation, refer to P.50 Hand Taps TYPE:1 TYPE:2 Cemented Carbide Taps Roll Taps TYPE:e3 TYPE:e4 Pipe Taps Simple Inspection Tools Segment:1E Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type (inch) (inch) (inch) (inch) (inch) (inch) (inch) flutes For Unified Threads GH1 PSUN0B1NEX No.0-80UNF 5P 1.772 0.236 - 1.161 0.141 0.11 0.187 2 1 GH2 PSUN0B2NEX GH1 PSUN1D1NEX Thread Mills No.1-64UNC 5P 1.772 0.275 - 1.161 0.141 0.11 0.187 2 1 GH2 PSUN1D2NEX GH1 PSUN1C1NEX No.1-72UNF 5P 1.772 0.275 - 1.161 0.141 0.11 0.187 2 1 GH2 PSUN1C2NEX GH1 PSUN2E1NEX Dies No.2-56UNC 5P 1.772 0.314 - 1.161 0.141 0.11 0.187 2 1 GH2 PSUN2E2NEX GH1 PSUN2D1NEX No.2-64UNF 5P 1.772 0.314 - 1.161 0.141 0.11 0.187 2 1 GH2 PSUN2D2NEX GH1 PSUN3F1NEX No.3-48UNC 5P 2.205 0.354 0.669 1.28 0.141 0.11 0.187 2 2 Center Drills GH2 PSUN3F2NEX GH1 PSUN3E1NEX NO.3-56UNF 5P 2.205 0.354 0.669 1.28 0.141 0.11 0.187 2 2 GH2 PSUN3E2NEX GH2 PSUN4H2NEX No.4-40UNC 5P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 2 2 GH3 PSUN4H3NEX Centering Tools GH1 PSUN4F1NEX No.4-48UNF 5P 2.205 0.354 0.709 1.28 0.141 0.11 0.187 2 2 GH2 PSUN4F2NEX GH2 PSUN5H2NEX No.5-40UNC 5P 2.205 0.433 0.768 1.358 0.141 0.11 0.187 2 2 GH3 PSUN5H3NEX ANSI PO-5 232