Value Collection TCI41000350 Tension Control Bolt A490

Product Description

The VALUE COLLECTION TCI41000350 is a heavy-hex tension control bolt assembly designed for structural steel connections. The assembly includes a nut and spline-drive washer, and is used where pre-tensioned high-strength bolting is required per ASTM A490 and ASTM F2280 standards. The splined shank shears off during installation when the specified clamp load is reached, providing a built-in tension indicator. Thread size is 1-8 UNC with a length under head of 3.5 inches and a head diameter of 1.875 inches. This bolt is intended for licensed structural ironworkers and contractors working to applicable building and structural codes.

This tension control bolt is suited for structural steel erection in commercial, industrial, and heavy civil construction. It is installed in bearing-type or slip-critical connections where ASTM A490 high-strength bolt specifications are called out on structural drawings. Each package contains 5 complete assemblies, each including the bolt, nut, and washer. The bright uncoated finish is standard for field-installed structural fasteners where paint or coating is applied after erection or where bare steel is acceptable per project specifications.

Key Features

• ASTM A490 and ASTM F2280 compliant for high-strength structural bolting applications
• 1-8 UNC thread standard ensures compatibility with standard heavy-hex structural nuts
• Spline-drive design shears at target clamp load, eliminating separate torque verification
• Each assembly includes bolt, nut, and washer ready for field installation
• Bright uncoated finish suitable for painted or bare structural steel applications
• Sold in a package of 5 assemblies with a minimum order quantity of 1 package

Compatibility

Designed as an OEM-style replacement and standard-fit tension control bolt for structural steel connections requiring ASTM A490 high-strength fasteners in 1-8 UNC thread size.

Installation Notes

Installation of ASTM A490 tension control bolts is performed by qualified structural ironworkers in accordance with AISC and RCSC specifications for structural joints. Power off or de-energize any adjacent electrical systems before working in structural bays near live conductors. Use an electric or pneumatic TC bolt shear wrench rated for 1-inch bolt assemblies. Do not reuse a tension control bolt assembly once the spline has sheared, as clamp load verification is no longer possible.