Value Collection TCI40870375 Tension Control Bolt 7/8-9 A490

Product Description

The VALUE COLLECTION TCI40870375 is a structural tension control bolt engineered for high-strength steel-to-steel connections in construction and industrial applications. This Grade A490 fastener features a 7/8-9 UNC thread form and measures 3-3/4 inches in length under the head, with a 1-5/8 inch head diameter. The splined end design allows installation with a TC wrench that shears the spline at a calibrated torque, eliminating the need for manual torque verification. Each package includes a matching nut and washer. This item is sold in a 5-piece package. Licensed structural ironworkers and steel erectors are the primary installers of this bolt type on structural steel projects governed by AISC and RCSC specifications.

Tension control bolts of this configuration are used in structural steel framing for commercial and industrial buildings, bridges, and heavy equipment platforms. The 7/8-9 thread size and A490 material grade suit connections requiring higher strength than standard A325 fasteners. The uncoated bright finish is standard for interior or protected structural environments. Each set includes the bolt, nut, and washer as required by ASTM F2280 installation standards.

Key Features

• Grade A490 high-strength steel construction meets ASTM A490 and ASTM F2280 standards
• 7/8-9 UNC thread size with 3-3/4 inch length under head for deep structural connections
• 1-5/8 inch head diameter provides broad bearing surface on steel flanges
• Includes matching nut and washer in each set for complete installation
• Splined end shears at rated installation torque, confirming proper pretension without manual checks
• Bright uncoated finish suitable for protected structural steel applications

Compatibility

Designed as an OEM-style structural fastener for use in steel-to-steel bolted connections where ASTM A490 or ASTM F2280 compliant tension control assemblies are specified.

Installation Notes

Installation must be performed by qualified structural ironworkers using a calibrated TC wrench matched to the 7/8-9 bolt diameter. Follow RCSC Specification for Structural Joints guidelines for pretensioned installation procedures. Verify that the mating steel surfaces are clean and free of mill scale, paint, or debris that could affect clamping force. Do not reuse tension control bolts once the spline has been sheared.