Date Published:Jun. 18. 2015 Date Updated:Jan. 27. 2025
Dimensions of Holes for Hexagon Socket Cap Screws

Dimensions of Holes for Hexagon Socket Cap Screws
Bore and bolt hole diameters for hex socket head cap screw
Nominal diameter of thread(d) |
M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | M24 |
---|---|---|---|---|---|---|---|---|---|---|---|
ds | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 |
d′ | 3.4 | 4.5 | 5.5 | 6.6 | 9 | 11 | 14 | 16 | 18 | 22 | 26 |
dk | 5.5 | 7 | 8.5 | 10 | 13 | 16 | 18 | 21 | 24 | 30 | 36 |
D | 6.5 | 8 | 9.5 | 11 | 14 | 17.5 | 20 | 23 | 26 | 32 | 39 |
K | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 |
H1 | 2.7 | 3.6 | 4.6 | 5.5 | 7.4 | 9.2 | 11 | 12.8 | 14.5 | 18.5 | 22.5 |
H2 | 3.3 | 4.4 | 5.4 | 6.5 | 8.6 | 10.8 | 13 | 15.2 | 17.5 | 21.5 | 25.5 |
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