Value Collection TCI40870450 Tension Control Bolt 7/8-9 A490

Product Description

The VALUE COLLECTION TCI40870450 is a structural tension control bolt designed for high-strength bolted connections in steel construction. The assembly meets ASTM A490 and ASTM F2280 standards and includes a matching nut and washer. The bolt features a 7/8-9 UNC thread, a length under head of 4.5 inches, and a head diameter of 1.625 inches. The bright, uncoated finish is typical for structural applications where field-applied coatings or inspection requirements dictate bare steel fasteners. Licensed structural ironworkers and steel fabricators install these fasteners in pre-engineered and field-bolted structural steel connections.

This tension control bolt is used in structural steel framing applications, including commercial building construction, bridges, and industrial frameworks. The splined shear-type design allows installation with a TC wrench that shears the spline at the specified pretension, eliminating the need for torque calibration. Each package contains five complete bolt assemblies, including one nut and one washer per bolt. The inch-system fastener is suited for AISC-compliant bolted connections calling for ASTM A490 high-strength hardware.

Key Features

• ASTM A490 and ASTM F2280 compliant for high-strength structural bolting
• 7/8-9 UNC thread form for standard inch-system structural connections
• 4.5-inch length under head accommodates typical multi-ply steel joint stacks
• Bright, uncoated finish — no additional surface treatment to interfere with inspection
• Each assembly includes nut and washer for complete installation readiness
• Packaged in sets of five for jobsite convenience

Compatibility

Designed for use in AISC-compliant structural steel bolted connections requiring ASTM A490 high-strength tension control bolt assemblies in 7/8-inch UNC thread applications.

Installation Notes

Tension control bolts must be installed by qualified structural ironworkers using a calibrated TC shear wrench. Power down all adjacent equipment and follow applicable OSHA and AISC bolt installation procedures before beginning work. Do not reuse tension control bolt assemblies once the spline has been sheared. Verify joint preparation and faying surface condition per project specifications before installation.