Head and Wench Size
| Bolt Diameter | Hex/Lag/Square Bolt | Heavy Hex Bolt |
| #6 | 1/4″ | – |
| #8 | 1/4″ | – |
| #10 | 5/16″ | – |
| #12 | 5/16″ | – |
| 1/4″ | 7/16″ or 3/8″ | – |
| 5/16″ | 1/2″ | – |
| 3/8″ | 9/16″ | – |
| 7/16″ | 5/8″ | – |
| 1/2″ | 3/4″ | 7/8″ |
| 9/16″ | 13/16″ | – |
| 5/8″ | 15/16″ | 1-1/16″ |
| 3/4″ | 1-1/8″ | 1-1/4″ |
| 7/8″ | 1-5/16″ | 1-7/16″ |
| 1″ | 1-1/2″ | 1-5/8″ |
| 1-1/8″ | 1-11/16″ | 1-3/4″ |
| 1-1/4″ | 1-7/8″ | 2″ |