Date Published:Jun. 18. 2015
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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