Value Collection TCB30750475USA Tension Control Bolt A325

Product Description

The VALUE COLLECTION TCB30750475USA is a Grade A325 steel tension control bolt designed for structural steel connections requiring precise, verifiable clamping force. The bolt features a 3/4-10 UNC thread and measures 4-3/4 inches in length under the head, with a 1-3/8 inch head diameter. Tension control bolts use a splined end that shears off when the specified preload is reached, eliminating the need for torque wrenches and providing a visible, auditable indicator that the bolt has been properly tensioned. Each package includes matching nut and washer. Installation is performed by ironworkers and structural steel erectors in both commercial and industrial applications.

This tension control bolt is suited for structural steel framing connections in commercial construction, industrial facilities, bridges, and heavy steel fabrication. The 3/4-10 thread size and 4-3/4 inch under-head length fit standard structural connection plies common in beam-to-column and beam-to-beam moment and shear connections. The uncoated bright finish is compatible with painted or galvanized mating surfaces where field coating is applied after erection. Each package contains 5 complete bolt assemblies including nut and washer, conforming to ASTM A325 and ASTM F1852 standards.

Key Features

• Grade A325 structural steel construction for high-strength bolted connections
• Splined tension control design confirms proper preload without torque wrench
• Conforms to ASTM A325 and ASTM F1852 fastener standards
• 3/4-10 UNC thread with 4-3/4 inch length under head
• Includes matching nut and washer per bolt assembly
• Bright uncoated finish suitable for field painting or coating after installation

Compatibility

Conforms to ASTM A325 and ASTM F1852 standards, making these bolts compatible with structural steel connections requiring A325-grade tension control bolt assemblies with 3/4-10 UNC thread.

Installation Notes

Tension control bolts are installed by qualified ironworkers using a TC gun (tension control electric wrench) that grips the splined end and rotates the nut until the spline shears, confirming minimum required preload. Always inspect bolt assemblies for damage or contamination before installation. Follow AISC and RCSC specification requirements for structural bolt installation, including proper hole preparation and connection surface condition. Store bolt assemblies in a dry location and install nuts and washers in the correct orientation as specified by the connection design.