Hollow Hex Bolts Stainless Steel 304
unit: mm
| Size | Pitch | Head Thick. | Head Width | Hole Dia. |
| M3 | 0.5 | 1.9-2.2 | 5.25-5.5 | 0.8-1.2 |
| M4 | 0.7 | 2.8-3.0 | 6.65-7 | 1.5-1.8 |
| M5 | 0.8 | 3.26-3.74 | 7.65-8 | 1.8 |
| M6 | 1.0 | 3.76-4.24 | 9.65-10 | 2.0 |
| M8 | 1.25 | 5.06-5.54 | 12.57-13 | 2-2.5 |
| M10 | 1.5 | 6.11-6.69 | 16.57-17 | 3.0 |
| M12 | 1.75 | 7.21-7.79 | 18.48-19 | 3.0 |
