Specifications of International Thread Standards

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 °.

Nominal Diameter mmPitch mmTapping Drill Size mm
M 1.00.250.78
M 1.10.250.83
M 1.20.250.93
M 1.40.301.08
M 1.60.351.22
M 1.80.351.42
M 2.00.401.57
M 2.20.451.71
M 2.50.452.01
M 3.00.502.46
M 3.50.602.85
M 4.00.703.24
M 4.50.753.69
M 5.00.804.13
M 6.01.004.92
M 7.01.005.92
M 8.01.256.65
M 9.01.257.65
M 10.01.508.38
M 11.01.509.38
M 12.01.7510.11
M 14.02.0011.84
M 16.02.0013.84
M 18.02.5015.29
M 20.02.5017.29
M 22.02.5019.29
M 24.03.0020.75
M 27.03.0023.75
M 30.03.5026.21
M 33.03.5029.21
M 36.04.0031.67
M 39.04.0034.67
M 42.04.5037.13
M 45.04.5040.13
M 48.05.0042.59
M 52.05.0046.59
M 56.05.5050.05
M 60.05.5054.05
M 64.06.0057.51
M 68.06.0061.51
ISO Coarse Thread