Pipe Tap Series Spiral Fluted Taps (for blind hole) S-NPT Hand Taps for American Taper Pipe Threads, Short (ℓg) Type Spiral Fluted Taps (for through hole) Specification E NPT 3/4 ~ Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Medium carbon steels 〜5 Hand Taps For icon explanation, refer to P.50 TYPE:1 TYPE:2 Cemented Carbide Taps g g Roll Taps Segment:1G Basic L ℓ ℓg Ds K ℓk No. of Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) (mm) flutes Type Stock (mm) For American Pipe Threads NPT 1/16-27 ANSI G TSNPT01L 3P 7.770 54 14 10.1 8 6 9 4 1 △ Special Thread Taps Simple Inspection Tools NPT 1/8-27 ANSI G TSNPT02L 3P 10.117 55 16.5 10.5 8 6 9 4 2 △ NPT 1/4-18 ANSI G TSNPT04O 3P 13.426 62 19.5 12.5 11 9 12 4 2 △ NPT 3/8-18 ANSI G TSNPT06O 3P 16.866 65 21 14 14 11 14 4 2 △ NPT 1/2-14 ANSI G TSNPT08Q 3P 20.980 80 27 17 18 14 17 4 2 △ Pipe Taps NPT 3/4-14 ANSI G TSNPT12Q 3P 26.325 85 29 19 23 17 20 4 2 △ NPT 1 -11.5 ANSI G TSNPT16T 3P 32.934 95 35 22 26 21 24 5 2 △ NPT 1 1/4-11.5 ANSI G TSNPT20T 3P 41.689 105 37.5 24.5 32 26 30 5 2 △ NPT 1 1/2-11.5 ANSI G TSNPT24T 3P 47.760 110 38.5 25.5 38 29 32 6 2 △ Thread Mills NPT 2 -11.5 ANSI G TSNPT32T 3P 59.797 120 42.5 27.5 46 35 38 6 2 △ Dies Center Drills Centering Tools JIS Pipe-43 ◎=Standard ○=Semi standard △=Made to order 592 For improvement, spec may change without advance notice.