Value Collection 451167BR Hex Head Cap Screw 7/8-9 Grade 8

Product Description

The VALUE COLLECTION 451167BR is a hex head cap screw designed for heavy-duty fastening applications in industrial, structural, and mechanical assemblies. This fastener measures 7/8-9 thread size with a 9-1/2 inch length under head and is manufactured from Grade 8 steel with a bright uncoated finish. It features partial threading along the shank, which provides a clamping surface and reduces stress concentration in the grip area. Installation requires a 1-5/16 inch hex key or wrench. The part conforms to ASME B18.2.1 standards and uses a Unified National Coarse (UNC) thread form, making it a standard choice for high-strength bolted joints.

This cap screw is suited for use in heavy equipment, machinery frames, structural steel connections, and other applications requiring a Grade 8 tensile rating. It is commonly installed by millwrights, ironworkers, maintenance mechanics, and industrial contractors where high-clamp-load fasteners are specified. The partially threaded shank is particularly useful in applications where the bolt passes through a clearance hole and threading in the grip zone is undesirable.

Key Features

• Grade 8 steel construction for high-strength fastening requirements
• 7/8-9 UNC thread form with 9-1/2 inch length under head
• Partially threaded shank for clean grip-zone clamping
• Bright uncoated finish suitable for use in dry or protected environments
• Conforms to ASME B18.2.1 dimensional standard
• 1-5/16 inch hex drive for standard wrench and socket tooling

Compatibility

Designed as a standard UNC hex head cap screw for use in any application specifying a 7/8-9 x 9-1/2 inch Grade 8 partially threaded fastener per ASME B18.2.1.

Installation Notes

Install using a 1-5/16 inch open-end, box, or socket wrench. Always ensure mating threads are clean and free of debris before installation. Torque to the value specified by the equipment manufacturer or structural engineer for Grade 8 fasteners of this diameter. De-energize and lock out any equipment before replacing or installing fasteners on live machinery per applicable safety codes.