
10. Tap Thread Limits (JIS, DIN, ANSI) Intro Metric Threads (M, MF) Unit: mm Major Minor Major Minor Pitch Diameter Pitch Diameter Kind diameter diameter Kind diameter diameter Size of Class Upper Lower Tolerance Basic Size of Class Upper Lower Tolerance Basic SP tap Basic Basic Tolerance tap Basic Basic Tolerance Size Size (μm) + Tolerance Size Size (μm) + Tolerance (μm) + (μm) Size (μm) + (μm) Size P1 25 10 15 P1 25 10 15 cutting tap cutting tap P2 40 25 15 P2 40 25 15 M2.2×0.25 2.200 2.038 1.929 ISO1 18 6 12 ISO1 21 7 14 SL ISO2 30 18 12 ISO2 36 21 15 M3×0.35 3.000 2.773 2.621 P1 25 10 15 G5 64 51 13 forming tap P2 40 25 15 G6 76 64 12 cutting tap M2.3×0.4 P3 2.300 2.040 55 40 15 1.867 ISO2X 64 51 13 PO ISO1 21 7 14 ISO3X 76 64 12 ISO2 36 21 15 P1 25 10 15 ISO2X 51 36 15 P2 40 25 15 P1 25 10 15 P3 55 40 15 ST cutting tap cutting tap P2 40 25 15 P4 70 55 15 M2.3×0.25 2.300 2.138 2.029 ISO1 18 6 12 ISO1 27 9 18 ISO2 30 18 12 ISO2 45 27 18 P1 25 10 15 ISO2X 60 42 18 P2 40 25 15 M3.5×0.6 ISO3 3.500 3.110 63 45 18 2.850 ROLL cutting tap P3 55 40 15 G5 64 51 13 ISO1 23 8 15 G6 76 64 12 forming tap ISO2 38 23 15 G7 89 76 13 M2.5×0.45 ISO2X 2.500 2.208 53 38 15 2.013 G8 102 89 13 CARBIDE G5 64 51 13 ISO2X 89 76 13 forming tap G7 89 76 13 ISO3X 102 89 13 ISO2X 64 51 13 P1 25 10 15 cutting tap ISO3X 89 76 13 M3.5×0.35 P2 3.500 3.273 40 25 15 3.121 LONG P1 25 10 15 ISO1 21 7 14 cutting tap P2 40 25 15 ISO2 36 21 15 M2.5×0.35 2.500 2.273 2.121 ISO1 20 7 13 P1 20 0 20 ISO2 34 20 14 P2 40 20 20 HAND TAPS cutting tap P1 25 10 15 P3 60 40 20 P2 40 25 15 ISO1 29 10 19 cutting tap P3 55 40 15 ISO2 48 29 19 2.600 ISO1 23 8 15 ISO2X 63 44 19 M4×0.7 4.000 3.545 3.242 EG (STI) ISO2 38 23 15 ISO3 67 48 19 M2.6×0.45 2.308 2.113 ISO2X 53 38 15 G6 76 64 13 forming tap G5 64 51 13 G7 89 76 13 forming tap G7 89 76 13 G8 102 89 13 SPECIAL ISO2X 2.000 64 51 13 ISO2X 89 76 13 THREADS, GAUGES ISO3X 89 76 13 ISO3X 102 89 13 P1 25 10 15 P1 25 10 15 cutting tap P2 40 25 15 P2 40 25 15 THREAD cutting tap M2.6×0.35 2.600 2.373 2.221 ISO1 20 7 13 P3 55 40 15 MILLS ISO2 34 20 14 ISO1 24 8 16 P1 25 10 15 ISO2 40 24 16 M4×0.5 4.000 3.675 3.459 P2 40 25 15 ISO3 56 40 16 DIES cutting tap P3 55 40 15 G5 64 51 13 forming tap ISO1 24 8 16 G6 76 64 12 ISO2 40 24 16 ISO2X 64 51 13 ISO2X 55 39 16 ISO3X 76 64 12 M3×0.5 ISO3 3.000 2.675 56 40 16 2.459 CENTER G5 64 51 13 DRILLS forming tap G6 76 64 12 G7 89 76 13 ISO2X 76 64 12 Technical ISO3X 89 76 13 info 663