Value Collection TCB30870475USA Tension Control Bolt A325

Product Description

The VALUE COLLECTION TCB30870475USA is a structural tension control bolt designed for high-strength steel-to-steel connections in construction and industrial applications. It features a 7/8-9 UNC thread and measures 4-3/4 inches under the head, with a 1-5/8 inch head diameter. Manufactured to ASTM A325 and ASTM F1852 standards, this bolt is made from Grade A325 steel with a bright, uncoated finish. Each package includes a matching nut and washer, making it a complete fastener assembly ready for installation. Structural ironworkers and steel erectors rely on this bolt type for moment connections, beam-to-column joints, and similar load-bearing applications where controlled preload is required.

This tension control bolt is used in commercial and industrial structural steel construction. It is suited for connections governed by AISC and RCSC bolt specifications, including shear-critical and slip-critical joint categories. The splined end-of-shank design allows installation with a TC wrench, which shears the spline at the correct tension without requiring a backup wrench on the bolt head. It is sold in packages of 5 fastener assemblies, each including a nut and washer.

Key Features

• ASTM A325 and ASTM F1852 certified for structural steel applications
• 7/8-9 UNC thread size for standard structural bolt patterns
• 4-3/4 inch length under head to accommodate typical connection stack-ups
• Splined shank tip allows torque-controlled installation with a TC impact wrench
• Includes nut and washer — complete assembly, no separate hardware needed
• Bright, uncoated finish for standard dry or protected environments

Compatibility

Designed as an OEM-style replacement and standard-stock structural fastener for steel-to-steel connections requiring ASTM A325 or ASTM F1852 compliant tension control bolt assemblies in the 7/8-9 thread size.

Installation Notes

Tension control bolts must be installed by qualified ironworkers or structural steel mechanics following RCSC Specification for Structural Joints guidelines. Use a calibrated TC wrench to drive the bolt until the splined end shears, indicating the fastener has reached the required pretension. Do not reuse tension control bolts once the spline has been sheared. Store bolts in a dry location and keep the lubricated assembly together until installation to maintain torque-tension consistency.