Value Collection D39029 Hex Head Cap Screw 5/16-18x1 Grade 8

Product Description

The VALUE COLLECTION D39029 is a fully threaded hex head cap screw designed for high-strength fastening applications. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers elevated tensile strength and corrosion resistance compared to lower-grade hardware. The 5/16-18 UNC thread pattern and 1-inch length under head make it a standard choice for structural and mechanical assemblies where reliable clamping force is required. It conforms to ASME B18.2.1 and SAE J429 dimensional and mechanical standards. Maintenance technicians, millwrights, and field service professionals working on equipment frames, brackets, and mechanical subassemblies will find this screw appropriate for demanding service conditions.

This fastener is suited for use in industrial equipment assembly, machinery maintenance, HVAC unit framing, electrical enclosure mounting, and general mechanical construction where Grade 8 strength is specified. The fully threaded shank allows engagement along the entire length, making it effective in applications with thinner material stacks or where maximum thread engagement is needed. It is sold individually with a minimum order quantity of 50 pieces, making it practical for shop stock, service van inventory, or job-site replenishment.

Key Features

• Grade 8 steel construction meets SAE J429 mechanical property requirements for high-strength fastener applications
• Zinc yellow dichromate finish provides corrosion resistance and is visually identifiable as a Grade 8 fastener
• Fully threaded shank maximizes thread engagement across the full 1-inch length under head
• 5/16-18 UNC thread size is a widely stocked standard, compatible with common nuts, inserts, and tapped holes
• Conforms to ASME B18.2.1 dimensional standards for consistent fitment across manufacturers

Compatibility

Designed as a standard 5/16-18 UNC hex head cap screw for use in any application specifying a Grade 8 fully threaded fastener of this thread size and length.

Installation Notes

Installation is performed with a standard hex wrench or socket of the appropriate drive size for a 5/16-18 cap screw. Always power down or de-energize equipment before servicing fastened assemblies. Do not mix Grade 8 fasteners with lower-grade nuts or inserts, as the hardware should be matched in grade to maintain rated joint strength. Torque to the value specified in the equipment service documentation or applicable industry fastener standards.