Bolt Sizes / Screw Threads (Metric / Inch)



MetricCoarseFine
mmInchInch
2.8#4-40#4-48
M3
3.2#5-40#5-44
3.5#6-32#6-40
M4
4.2#8-32#8-36
4.8#10-24#10-32
M5
5.5#12-24#12-28
M6
6.31/4-201/4-28
7.95/16-185/16-24
M8
9.53/8-163/8-24
M10
10.97/16-147/16-20
M12
12.71/2-131/2-20
14.39/16-129/16-18
15.95/8-115/8-18
M16
19.13/4-103/4-16
M20
22.27/8-97/8-14
M24
25.41.0-81.0-12
28.61 1/8-71 1/8-12
M30
31.81 1/4-71 1/4-12