Value Collection 451288BR Hex Head Cap Screw 7/8-9x15 Grade 8

Product Description

The VALUE COLLECTION 451288BR is a Grade 8 steel hex head cap screw designed for heavy-duty bolted connections in industrial, structural, and mechanical applications. Measuring 7/8-9 thread size with a 15-inch length under the head, this fastener is partially threaded and conforms to ASME B18.2.1 dimensional standards. The bright, uncoated finish is standard for Grade 8 fasteners intended for use with plated hardware or in applications where an additional coating is applied on-site. At 2.67 pounds, this is a substantial fastener suited for high-load assemblies requiring reliable clamping force.

This cap screw is commonly used in structural steel fabrication, heavy equipment assembly, agricultural machinery, and industrial maintenance. The 7/8-9 UNC thread profile is a widely specified size in North American manufacturing and construction. Partial threading allows for shank engagement in applications where bearing load across an unthreaded shank is required, such as slip-fit joints or high-shear connections. Installers in fabrication shops, millwright trades, and industrial maintenance crews will encounter this fastener in frames, flanges, and structural bolted joints.

Key Features

• Grade 8 steel construction for high tensile strength in demanding load-bearing applications
• 7/8-9 UNC thread profile, a standard North American coarse-thread designation
• Partially threaded shank provides shear resistance in slip-fit and close-tolerance joints
• Conforms to ASME B18.2.1 for dimensional accuracy and interchangeability
• Bright, uncoated finish suitable for use with standard Grade 8 nuts and hardened washers
• 1-15/16 inch hex key size for use with standard heavy-hex impact sockets or wrenches

Compatibility

Designed as a standard ASME B18.2.1 Grade 8 hex head cap screw compatible with 7/8-9 UNC threaded nuts and tapped holes in steel assemblies requiring high-strength fasteners.

Installation Notes

Installation is performed by millwrights, ironworkers, maintenance mechanics, or other qualified trades using a 1-15/16 inch socket or open-end wrench. De-energize and lock out any equipment before replacing fasteners in live mechanical assemblies. Grade 8 fasteners should be paired with Grade 8 or equivalent nuts and hardened washers to maintain rated clamp load. Follow applicable torque specifications from the equipment manufacturer or relevant structural codes when tightening.