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12 Point Bolt
The head is shaped to fit a 12 point socket for ease of installation. It also has a flange under the head that works the same as a washer to distribute the load.
Other Names: Ferry Head Bolt
Dimensions
IFI 115
| Thread Dia. | Across Flats | Flange Dia. |
|---|---|---|
| 1/4 | 0.244 - 0.252 | 0.365 - 0.375 |
| 5/16 | 0.306 - 0.315 | 0.457 - 0.469 |
| 3/8 | 0.368 - 0.377 | 0.550 - 0.562 |
| 7/16 | 0.429 - 0.438 | 0.642 - 0.656 |
| 1/2 | 0.493 - 0.502 | 0.735 - 0.750 |
| 9/16 | 0.555 - 0.564 | 0.828 - 0.844 |
| 5/8 | 0.618 - 0.627 | 0.921 - 0.938 |
| 3/4 | 0.743 - 0.752 | 1.107 - 1.125 |
| 7/8 | 0.866 - 0.877 | 1.293 - 1.312 |
| 1 | 0.991 - 1.003 | 1.479 - 1.500 |
| 1 1/8 | 1.115 - 1.128 | 1.665 - 1.688 |
| 1 1/4 | 1.24 - 1.253 | 1.852 - 1.875 |
| 1 3/8 | 1.378 - 2.038 | 2.038 - 2.062 |
| 1 1/2 | 1.503 - 2.224 | 2.224 - 2.250 |