DIN 7   

*All measurements in millimeters (mm)*

d r c
M2 2 0.3
M3 3 0.45
M4 4 0.6
M5 5 0.75
M6 6 0.9
M8 8 1.2
M10 10 1.5
M12 12 1.8
M16 16 2.5
M20 20 3

All information is strictly informative