Value Collection TCB31000350 Tension Control Bolt A325

Product Description

The VALUE COLLECTION TCB31000350 is a structural tension control bolt engineered for high-strength steel-to-steel connections in commercial and industrial construction. This fastener features a 1-8 UNC thread size and a 3.5-inch length under head, with a 1.875-inch head diameter. Manufactured from A325 steel with a bright uncoated finish, it meets ASTM A325 and ASTM F1852 standards. Each unit ships as a complete assembly including a compatible nut and washer, allowing installation crews to proceed without sourcing additional hardware. Structural ironworkers and steel erectors are the primary installers of this fastener type.

This bolt is suited for structural steel connections in commercial buildings, bridges, and heavy industrial frameworks where AISC and RCSC specifications require pretensioned or snug-tight high-strength fastener assemblies. The tension control design uses a splined end that shears off at the correct installation torque, providing a visual confirmation of proper preload without requiring a torque wrench or turn-of-nut inspection. The package quantity is 5 bolts per pack, with a minimum order quantity of 1 pack.

Key Features

• A325 steel construction meets ASTM A325 and ASTM F1852 fastener standards
• 1-8 UNC thread for compatibility with standard structural bolt patterns
• 3.5-inch length under head with 1.875-inch head diameter
• Splined tension control design provides visual shear-off confirmation of correct preload
• Bright uncoated finish suitable for painted or coated structural assemblies
• Includes nut and washer for a complete installation-ready assembly

Compatibility

Designed as an OEM-style structural fastener for high-strength steel connection applications requiring ASTM A325 or ASTM F1852 compliant tension control bolt assemblies in 1-8 UNC thread configurations.

Installation Notes

Installation is performed by qualified structural ironworkers using a tension control wrench or TC gun calibrated for the fastener diameter. All connected steel plies must be brought to snug-tight contact before final pretensioning. Follow RCSC Specification for Structural Joints Using High-Strength Bolts for pretensioning procedures and inspection requirements. Do not reuse tension control bolts once the spline has sheared.