Unit:mm Size Pitch dc max k m min S max min max min M4 0.7 10.5 6.5 6 4.5 7 6.6 M5 0.8 11.8 7.1 6.74 4.7 eight 7.78 M6 1 14.2 9.1 8.74 5.7 10 9.78 M8 1.25 17.9 11.1 10.67. 7.6 13 12.73 M10 1.5 21.8 13.5 13.07 9.6 15 14.73 M12 1.75 26 16.1 15.67 11.6 18 17.73