Round Twist Off Tension Control Bolt

Twist Off Tension Control Bolt use a proprietary lubrication on the nut, to control the clamping force of the bolt and ensure the appropriate tension level is achieved. Because of this proprietary lubrication, it is not permissible to re-lubricated TC bolts, in the field, only the manufacture of a TC bolt can re-lubricate a TC assembly.

Specification: A325/F1852 & A490/F2280

Finish: Type-1, Type-3 & Mechanical Galvanized

Ordering Information
NOTE 2a Bolts are sometimes detailed with names such as A325 HS, A325 SC, A325 X or A490 N. These names relate to connection design and bolt installation, but do not change the manufacturing requirements and are preferably not shown on bolt orders.