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This thread is a globally standardized thread, it replaces older metric thread and most threads with inch dimensions. The label consists of the letter M followed by a number indicating the nominal diameter, the flank angle is 60 °. Advertising: Nominal Diameter mm | Pitch mm | Tapping Drill Size mm | M 1.0 | 0.25 | 0.78 | M 1.1 | 0.25 | 0.83 | M 1.2 | 0.25 | 0.93 | M 1.4 | 0.30 | 1.08 | M 1.6 | 0.35 | 1.22 | M 1.8 | 0.35 | 1.42 | M 2.0 | 0.40 | 1.57 | M 2.2 | 0.45 | 1.71 | M 2.5 | 0.45 | 2.01 | M 3.0 | 0.50 | 2.46 | M 3.5 | 0.60 | 2.85 | M 4.0 | 0.70 | 3.24 | M 4.5 | 0.75 | 3.69 | M 5.0 | 0.80 | 4.13 | M 6.0 | 1.00 | 4.92 | M 7.0 | 1.00 | 5.92 | M 8.0 | 1.25 | 6.65 | M 9.0 | 1.25 | 7.65 | M 10.0 | 1.50 | 8.38 | M 11.0 | 1.50 | 9.38 | M 12.0 | 1.75 | 10.11 | M 14.0 | 2.00 | 11.84 | M 16.0 | 2.00 | 13.84 | M 18.0 | 2.50 | 15.29 | M 20.0 | 2.50 | 17.29 | M 22.0 | 2.50 | 19.29 | M 24.0 | 3.00 | 20.75 | M 27.0 | 3.00 | 23.75 | M 30.0 | 3.50 | 26.21 | M 33.0 | 3.50 | 29.21 | M 36.0 | 4.00 | 31.67 | M 39.0 | 4.00 | 34.67 | M 42.0 | 4.50 | 37.13 | M 45.0 | 4.50 | 40.13 | M 48.0 | 5.00 | 42.59 | M 52.0 | 5.00 | 46.59 | M 56.0 | 5.50 | 50.05 | M 60.0 | 5.50 | 54.05 | M 64.0 | 6.00 | 57.51 | M 68.0 | 6.00 | 61.51 |  |
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