Value Collection TCI40870425 Tension Control Bolt 7/8-9

Product Description

The VALUE COLLECTION TCI40870425 is a structural tension control bolt assembly designed for high-strength steel construction applications. The bolt features a 7/8-9 UNC thread profile and measures 4-1/4 inches from under the head. The 1-5/8 inch head diameter provides the bearing surface required for proper load transfer. Each assembly ships complete with a nut and washer, making it ready for field installation without additional hardware sourcing. This fastener meets ASTM A490 and ASTM F2280 standards, which are mandatory benchmarks for structural steel connections in commercial and industrial construction.

This tension control bolt is used in structural steel erection where high-strength, pre-tensioned connections are required. Typical applications include steel frame buildings, bridges, industrial structures, and heavy equipment platforms. The uncoated bright finish is appropriate for connections that will be covered, painted, or otherwise protected from direct exposure after installation. Structural ironworkers and steel erectors are the primary installers of this fastener type. Each package contains 5 complete bolt assemblies.

Key Features

• Meets ASTM A490 and ASTM F2280 structural fastener standards
• 7/8-9 UNC thread for compatibility with standard structural connection hardware
• 4-1/4 inch length under head suits common structural steel connection depths
• Complete assembly includes matching nut and washer — no additional components required
• A490 alloy steel construction provides high tensile and proof load capacity
• Bright uncoated finish suitable for painted or covered structural connections

Compatibility

Designed as a high-strength structural replacement fastener for steel-to-steel connections requiring 7/8-9 UNC tension control bolt assemblies conforming to ASTM A490 and ASTM F2280.

Installation Notes

Tension control bolts must be installed by qualified structural ironworkers in compliance with AISC and RCSC specification requirements for pre-tensioned structural connections. Shut down any adjacent work activity that could disturb the joint before torquing. A standard TC bolt shear wrench is required to achieve proper pretension — do not substitute conventional impact or torque wrenches. Inspect the splined end after installation to confirm the spline has sheared, indicating full pretension has been achieved.