Value Collection 451163BR Hex Head Cap Screw 7/8-9 X 8 in

Product Description

The VALUE COLLECTION 451163BR is a Grade 8 steel hex head cap screw designed for high-strength fastening in demanding mechanical and structural applications. Measuring 7/8-9 thread size with an 8-inch length under the head, this screw features a Unified National Coarse (UNC) thread form and is partially threaded for secure clamping in thick-material assemblies. The bright, uncoated finish leaves the steel bare for applications where coating is specified separately or not required. It conforms to ASME B18.2.1 dimensional standards, making it a reliable choice for code-compliant installations. Machinists, millwrights, and maintenance mechanics are the typical installers for fasteners of this specification.

This cap screw is suited for heavy equipment assembly, industrial machinery, structural steel connections, and mechanical maintenance work where a high-strength Grade 8 fastener with a standard inch-series thread is required. The 7/8-9 UNC thread is a widely used size in industrial and OEM applications. The partially threaded shank provides a bearing surface that resists shear loads better than a fully threaded fastener of the same length, making it a preferred choice in bolted joints with thick mating components.

Key Features

• Grade 8 steel construction for high tensile and yield strength in heavy-duty fastening
• 7/8-9 UNC thread for compatibility with standard inch-series tapped holes and nuts
• 8-inch length under the head accommodates thick-stack or long-reach bolted joints
• Partially threaded shank improves shear resistance and clamping performance
• Bright, uncoated finish for use where surface treatment is applied separately
• Conforms to ASME B18.2.1 dimensional standards for predictable fit and performance

Compatibility

Designed as a standard inch-series hex head cap screw for use with 7/8-9 UNC tapped holes, standard hex nuts, and heavy hex nuts in industrial and mechanical assemblies.

Installation Notes

Install using a 1-5/16-inch hex wrench or socket. Ensure mating threads are clean and free of debris before installation. Torque to the value specified by the joint design engineer or equipment manufacturer for Grade 8 fasteners of this size. Always inspect threads for damage before use and replace any fastener showing signs of deformation or corrosion.