| Shank Diameter | Throat to Hole Center | Suggested Bolt Size | Throat Opening | Center of Hole to Last Usable Thread |
|---|---|---|---|---|
| A | B | C | D | E |
| 1 | 21/2 | 7/8 | 11/8 | 4 |
| 13/8 | 31/2 | 1 | 11/4 | 51/2 |
| 13/8 | 31/2 | 1 | 13/8 | 31/4 |
| 13/8 | 13/4 | 1 | 13/8 | 31/4 |
| 13/4 | 37/8 | 15/8 | 23/8 | 61/2 |
| 13/4 | 17/8 | 15/8 | 11/4 | 41/4 |
| 2 | 47/8 | 2 | 21/2 | 71/2 |
| Use w/1" Barrel | 15/8 | 7/8 | 11/8 | N/A |
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