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STRUCTURAL AND TC BOLTS



p99-7983

Structural Bolts

A heavy hex bolt made of medium carbon steel, manufactured in accordance with ASTM Standard A325. These bolts are intended for use in structural steel connections used in heavy construction. Domestic made fasteners available, please contact your Colony representative for more details.

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P99-7977

TC (Tension Control) Bolts

TC (Tension Control) bolts can be installed anywhere a standard structural bolt is used, and are not dependent on tool calibration or operator skill. The installation tool has an inner socket which engages the spline tip of the bolt, while the outer socket engages the nut. The outer socket rotates the nut relative to the bolt spline, and when the tension is sufficient in the fastener, the spline tip simply twists-off, leaving the tightened bolt correctly installed in the connection. Fasteners are designed to be installed with various types of lightweight portable electric wrenches specifically intended for use with this style of structural fasteners. A325 assemblies, ASTM F1852 & ASME B18.2.6 Domestic made fasteners are also available, please contact your Colony representative for more details.

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