Alloy steel heat treated socket head cap screws. Fro use when extremely high loads are encountered.
| Size | Hex Key Required |
| 0-80 | 0.050 |
| 1-72 | 1/16 |
| 2-56 | 5/64 |
| 3-48 | 5/64 |
| 4-40 | 3/32 |
| 5-40 | 3/32 |
| 6-32 | 7/64 |
| 8-32 | 9/64 |
| 10-32 | 5/32 |
Alloy steel heat treated socket head cap screws. Fro use when extremely high loads are encountered.
| Size | Hex Key Required |
| 0-80 | 0.050 |
| 1-72 | 1/16 |
| 2-56 | 5/64 |
| 3-48 | 5/64 |
| 4-40 | 3/32 |
| 5-40 | 3/32 |
| 6-32 | 7/64 |
| 8-32 | 9/64 |
| 10-32 | 5/32 |