Value Collection TCB31000550 Tension Control Bolt A325

Product Description

The VALUE COLLECTION TCB31000550 is a heavy-duty structural tension control bolt designed for high-strength steel-to-steel connections in construction and fabrication applications. Built to ASTM A325 and ASTM F1852 standards, this bolt features a 1-8 UNC thread and a length under head of 5.5 inches, making it suited for thick structural assemblies. The splined shear-type design allows installation torque to be verified by twist-off of the spline end, eliminating the need for a torque wrench calibration step. Each package includes a matching nut and washer. Licensed structural ironworkers and structural steel erectors are the primary installers.

This tension control bolt is used in structural steel framing for commercial and industrial buildings, bridges, and heavy infrastructure projects. It is appropriate for bolted moment connections, shear tabs, and other high-load structural joints where ASTM A325 bolt specification is called out by the engineer of record. The uncoated bright finish is suitable for painted or galvanized assemblies where field coating will be applied after erection. Each package contains 5 assemblies.

Key Features

• ASTM A325 and ASTM F1852 compliant for high-strength structural applications
• 1-8 UNC thread with 5.5 inches length under head for thick steel connections
• Spline-end tension control design simplifies installation verification
• Includes nut and washer — complete assembly per bolt
• Bright uncoated finish compatible with field-applied coatings
• Sold in a package of 5 assemblies with a minimum order of 1 package

Compatibility

Designed as an ASTM A325 and ASTM F1852 compliant structural bolt assembly for use in bolted steel connections where a 1-8 UNC tension control bolt is specified.

Installation Notes

Tension control bolts are installed by structural ironworkers using a TC wrench or tension control installation tool that shears the splined end at the specified preload. Ensure mating steel surfaces are free of mill scale, paint, or debris per applicable AISC and RCSC bolt specification requirements. Do not reuse tension control bolts once the spline has been sheared. Follow all applicable OSHA structural steel erection standards during installation at height.