Bolt Clearance Dimensions
Clearances For Metric Bolts (mm)
| Hole Size | Diameter of Square drive Socket | Diameter of ring spanner | |
|---|---|---|---|
| M3 | 3.4 | 14 | - |
| M4 | 4.5 | 22 | 14 |
| M5 | 5.5 | 22 | 14 |
| M6 | 6.6 | 26 | 17 |
| M8 | 9 | 26 | 22 |
| M10 | 11 | 27 | 27 |
| M12 | 13.5 | 29 | 30 |
| M16 | 17.5 | 42 | 38 |
| M20 | 22 | 47 | 46 |
| M24 | 26 | 54 | 55 |
| M30 | 33 | 70 | 70 |
| M36 | 39 | 81 | 90 |