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Serrated Head Flange Bolt
Designed with serrations under the head to prevent loosening from vibration. It also has a flange under the head that works the same as a washer to distribute the load.
Dimensions
| Thread Dia. | Across Flats | Flange Dia. |
|---|---|---|
| 1/4 | 0.367 - 0.375 | 0.513 - 0.531 |
| 5/16 | 0.491 - 0.500 | 0.686 - 0.706 |
| 3/8 | 0.552 - 0.562 | 0.771 - 0.793 |
| 7/16 | 0.612 - 0.625 | 0.856 - 0.930 |
| 1/2 | 0.736 - 0.750 | 1.020 - 10.70 |
| 5/8 | 0.922 - 0.9375 | 1.260 - 1.330 |
| 3/4 | 1.100 - 1.125 | 1.490 - 1.590 |