| Year | 1956 |
| Date | 16-Feb |
| Volume | 114 |
| Issue | 2,856 |
| Page | 271 |
| Category | Workshop |
| Part | 3 |
| Title | Making socket head screws |
| Author | Marting Cleeve |
| Notes | Drilling grub screws. Sequence of operations, arrangement of tools, forming hexagonal impression, turning cap head screws, special stop, producing a cap screw, socket forming, countersunk cap head screws, mind your eyes, chucking from the bar |