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 STI (for blind hole) Spiral Fluted Taps Hand Taps for Helical Coil Wire Screw Thread Inserts Specification (for through hole) Spiral Fluted Taps ■Hand tap cutting internal threads for helical coil to enter. E Recommended Tapping Speed depending on Materials (for through hole) Spiral Pointed Taps Wrought aluminum Aluminum alloy castings inc alloy castings 5〜15 5〜15 5〜15 TYPE:1e (m/min) (m/min) (m/min) For icon explanation, refer to P.50 Hand Taps TYPE:e2 TYPE:3e Carbide Taps Cemented Roll Taps Segment:1A Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Simple Inspection Tools Pipe Taps (inch) (inch) (inch) (inch) (inch) (mm) (mm) flutes For Helical Coil Wire Screw Thread Inserts, for Unified Threads TUUN2E1NEB5 5P GH1 TUUN2E1NEBA 1.5P STI No.2-56UNC 2.205 0.354 0.709 1.28 0.141 0.11 0.187 3 1 TUUN2E2NEB5 5P GH2 TUUN2E2NEBA 1.5P TUUN4H1NEB5 5P GH1 TUUN4H1NEBA 1.5P STI No.4-40UNC 2.48 0.512 0.827 1.496 0.168 0.131 0.25 3 1 TUUN4H2NEB5 5P GH2 Thread Mills TUUN4H2NEBA 1.5P TUUN6J1NEB5 5P GH1 TUUN6J1NEBA 1.5P STI No.6-32UNC 2.756 0.551 0.945 1.654 0.194 0.131 0.25 3 1 TUUN6J2NEB5 5P GH2 Dies TUUN6J2NEBA 1.5P TUUN8J1NEB5 5P GH1 TUUN8J1NEBA 1.5P STI No.8-32UNC 3.15 0.591 0.984 1.929 0.22 0.165 0.281 3 1 TUUN8J2NEB5 5P GH2 TUUN8J2NEBA 1.5P Center Drills TUUNAM2NEB5 5P GH2 TUUNAM2NEBA 1.5P STI No.10-24UNC 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 TUUNAM3NEB5 5P GH3 TUUNAM3NEBA 1.5P TUUNAJ2NEB5 5P Centering Tools GH2 TUUNAJ2NEBA 1.5P STI No.10-32UNF 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 TUUNAJ3NEB5 5P GH3 TUUNAJ3NEBA 1.5P ANSI HT-16 267