| PART NUMBER |  THREAD DIAMETER |  INSIDE SPAN (A) |  INSIDE BOLT HEIGHT (B) |  THREAD LENGTH (C) | STYLE/TYPE |
| 57201 | 7/16"-14 | 1 9/16" | 3 9/16" | 1 3/4" | SQ |
| 57211 | 7/16"-14 | 2 1/16" | 2 13/16" | 1 3/4" | SQ |
| 57221 | 7/16"-14 | 3 1/16" | 2 13/16" | 1 3/4" | SQ |
| 57231 | 7/16"-14 | 3 1/16" | 4 5/16" | C 1 3/4" | SQ |
| 57241 | 7/16"-14 | 4 1/16" | 2 13/16" | 1 3/4" | SQ |
| 57321 | 3/8"-16 | 1 5/8" | 3 9/16" | 1 3/4" | SQ |
| 57331 | 3/8"-16 | 2 1/16" | 3 3/8" | 1 3/4" | SQ |
| 57341 | 3/8"-16 | 2 1/16" | 7 7/8" | 4" | SQ |
| 57351 | 3/8"-16 | 3 1/16" | 3 7/8" | 1 3/4" | SQ |
| 57361 | 3/8"-16 | 3 1/16" | 4 7/8" | 1 3/4" | SQ |
| 57401 | 1/2"-13 | 1 9/16" | 4 1/16" | 2" | SQ |
| 57411 | 1/2"-13 | 2 1/16" | 4 13/16" | 2" | SQ |
| 57431 | 1/2"-13 | 3 1/16" | 3 13/16" | 2" | SQ |
| 57441 | 1/2"-13 | 3 1/16" | 3 5/16" | 2" | SQ |
| 57451 | 1/2"-13 | 3 1/16" | 4 5/16" | 2" | SQ |
| 57461 | 1/2"-13 | 3 1/16" | 5 5/16" | 2" | SQ |
| 57471 | 1/2"-13 | 3 1/16" | 6 5/16" | 2" | SQ |
Current stock on hand is less than quantity ordered. Please contact us for next availability.
1-877-753-2425