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Tension Control Bolt
A 3 piece fastening system that is designed to ensure proper installation tension. They are most commonly made to the ASTM A325 standard and are used in structural steel joints in buildings.
The bolt features a rounded head and a tip that is designed to break off when the proper tension is achieved when installed. A ASTM A563 DH nut and ASTM F436 washer are included with every bolt.
Dimensions
ASTM A325
| Thread Dia. | Head Dia. | Thread Length |
|---|---|---|
| 5/8 | 1.102 - 1.181 | 1 1/4 |
| 3/4 | 1.338 - 1.417 | 1 3/8 |
| 7/8 | 1.535 - 1.654 | 1 1/2 |
| 1 | 1.771 - 1.900 | 1 3/4 |