Nominal Thread. Nut Diameter Nut Width  Width
Size Pitch Major (D) Minor (D1 )
Max - min
Thick (Zn) (A/F) (A/C)
M3 0,5 3 2,599 - 2,459 2,4 5,5 6.35
M4 0,7 4 3,422 - 3,242 3,2 7 8.08
M5 0,8 5 4,334 - 4,134 4,0 8 9.24
M6 1,0 6 5,153 - 4,917 5,0 10 11.55
M8 1,25 8 6,912 - 6,647 6,5 13 15.01
M10 1,5 10 8,676 - 8,376 8,0 16 18.48
M12 1,75 12 10,441 - 10,106 10,0 18 20.78
M16 2,0 16 14,210 - 13,835 13,0 24 27.71
M20 2,5 20 17,744 - 17,294 16,0 30 34.64
M24 3,0 24 21,252 - 20,752 19,0 36 41.57
M30 3,5 30 26,771 - 26,211 24,0 46 53.12
M36 4,0 36 32,270 - 31,670 29,0 55 63.51