Metric coarse thread

This thread is a globally standardized thread, it replaces older metric thread and most threads with inch dimensions.

Normally it consists of the letter M and a number that indicates the nominal diameter (M5 = diameter of 5mm).

The flank angle is 60°.

ISO METRIC COARSE THREAD DIN 13-1

Nominal Diameter (mm) Pitch (mm) Tapping Drill Size (mm)
M1 0.25 0.78
M1.1 0.25 0.83
M1.2 0.25 0.93
M1.4 0.30 1.08
M1.6 0.35 1.22
M1.8 0.35 1.42
M2 0.40 1.57
M2.2 0.45 1.71
M2.5 0.45 2.01
M3 0.50 2.46
M3.5 0.60 2.85
M4 0.70 3.24
M4.5 0.75 3.69
M5 0.80 4.13
M6 1.00 4.92
M7 1.00 5.92
M8 1.25 6.65
M9 1.25 7.65
M10 1.50 8.38
M11 1.50 9.38
M12 1.75 10.11
M14 2.00 11.84
M16 2.00 13.84
M18 2.50 15.29
M20 2.50 17.29
M22 2.50 19.29
M24 3.00 20.75
M27 3.00 23.75
M30 3.50 26.21
M33 3.50 29.21
M36 4.00 31.67
M39 4.00 34.67
M42 4.50 37.13
M45 4.50 40.13
M48 5.00 42.59
M52 5.00 46.59
M56 5.50 50.05
M60 5.50 54.05
M64 6.00 57.51
M68 6.00 61.51

METRIC COARSE THREAD DIN 13-1

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