DIN 914   

*All measurements in millimeters (mm)*

d d1 max t min e s
M3 - 1.2 1.73 1.5
M4 - 1.5 2.3 2
M5 - 2 2.87 2.5
M6 1.5 2 3.44 3
M8 2 3 4.58 4
M10 2.5 4 5.72 5
M12 3 4.5 6.86 6
M16 4 6.4 9.15 8
M20 5 8 11.43 10

All information is strictly informative