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Type R，radius form, without protective chamfer
d1 0.5 0.8 1 1.25 1.6 2 2.5 3.15 4 5 6.3 8 10 12.5 d2 1.06 1.7 2.12 2.65 3.35 4.25 5.3 6.7 8.5 10.6 13.2 17 21.2 26.5 t min 1.4 1.5 1.9 2.3 2.9 3.7 4.6 5.8 7.4 9.2 11.4 14.7 18.3 23.6 a 2 2.5 3 4 5 6 7 9 11 14 18 22 28 36
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Type A，straight form, without protective chamfer
d1 0.5 0.8 1 1.25 1.6 2 2.5 3.15 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 d2 1.06 1.7 2.12 2.65 3.35 4.25 5.3 6.7 8.5 10.6 13.2 17 21.2 26.5 33.5 42.5 53 67 85 106 t max / / / / / / / / / / / / / / 37.5 47.5 60 75 95 118 min 1 1.5 1.9 2.3 2.9 3.7 4.6 5.9 7.4 9.2 11.5 14.8 18.4 23.6 30 37.5 47.5 60 75 95 α1 / / / / / / / / / / / / / / 120° α2 (0, -1°) / / / / / / / / / / / / / / 60° a 2 2.5 3 4 5 6 7 9 11 14 18 22 28 36 45 56 71 90 112 140
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Type B，straight form, with conical protective chamfer
d1 1 1.25 1.6 2 2.5 3.15 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 d2 2.12 2.65 3.35 4.25 5.3 6.7 8.5 10.6 13.2 17 21.2 26.5 33.5 42.5 53 67 85 106 b 0.3 0.4 0.5 0.6 0.8 0.9 1.2 1.6 1.4 1.6 2 2 2.6 3 2.9 3.8 4.3 5.5 d3 3.15 4 5 6.3 8 10 12.5 16 18 22.4 28 33.5 42.5 53 63 80 100 125 t max / / / / / / / / / / / 32.1 40.1 50.5 62.9 73.8 99.3 123.5 min 2.2 2.7 3.4 4.3 5.4 6.8 8.6 10.8 12.9 16.4 20.4 25.6 32.6 40.5 50.4 63.8 79.3 100.5 a 3.5 4.5 5.5 6.6 8.3 10 12.7 15.6 20 25 31 38 48 60 75 95 118 150 α1 / / / / / / / / / / / 120° α2 (0, -1°) / / / / / / / / / / / 60° α3 / / / / / / / / / / / 120°
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Type C，straight form, with truncated protective chamfer (left unspecified in ISO Standard)
d1 1 1.25 1.6 2 2.5 3.15 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 d2 2.12 2.65 3.35 4.25 5.3 6.7 8.5 10.6 13.2 17 21.2 26.5 33.5 42.5 53 67 85 106 b 0.4 0.6 0.7 0.9 0.9 1.1 1.7 1.7 2.3 3 3.9 4.3 6.1 7.8 8.7 11.3 17.3 17.3 d4 4.5 5.3 6.3 7.5 9 11.2 14 18 22.4 28 35.5 45 56 71 90 112 140 180 d5 5 6 7.1 8.5 10 12.5 16 20 25 31.5 40 50 63 80 100 125 160 200 t max / / / / / / / / / / / / 37.5 47.5 60 75 95 118 min 1.9 2.3 2.9 3.7 4.6 5.9 7.4 9.2 11.5 14.8 18.4 23.6 30 37.5 47.5 60 75 95 a 3.5 4.5 5.5 6.6 8.3 10 12.7 15.6 20 25 31 42.5 53 67 85 106 132 170
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