Bowmalloy 36001 Hex Head Cap Screw 1/4-20 X 5/8 in Grade 9

Product Description

The BOWMALLOY 36001 is a fully threaded hex head cap screw sized 1/4-20 x 5/8 inches, manufactured from Grade 9 alloy steel with a zinc-plated clear chromate finish. Grade 9 alloy steel delivers high tensile strength above the standard Grade 5 and Grade 8 classifications, making this fastener appropriate for demanding mechanical and structural applications. The clear chromate zinc plating provides corrosion resistance while maintaining a clean, low-profile appearance. Measured in the inch system, this screw is a standard fastener used by HVAC technicians, plumbers, electricians, equipment fabricators, and general trade professionals in both light and heavy-duty assemblies.

This cap screw is suited for residential and commercial mechanical system installations where a compact 5/8-inch length and 1/4-20 thread are required. Typical applications include equipment panels, bracket mounting, enclosure assembly, and component attachment in HVAC units, electrical enclosures, and plumbing equipment. The fully threaded shank provides thread engagement across the full grip length, which is advantageous in thin-material or close-tolerance fastening situations. Sold in packages of 100, this part is practical for service contractors and assemblers who need a reliable supply of consistent-spec hardware on hand.

Key Features

• Grade 9 alloy steel construction for high tensile strength in demanding applications
• Fully threaded shank provides maximum thread engagement across the full fastener length
• Zinc-plated clear chromate finish offers corrosion resistance for indoor and light-duty outdoor use
• 1/4-20 thread size and 5/8-inch length under head - a widely stocked inch-system standard
• Package quantity of 100 units supports service stock and production-volume use

Compatibility

Designed as a standard inch-system hex head cap screw compatible with any 1/4-20 threaded hole or nut requiring a 5/8-inch grip length in mechanical, HVAC, electrical, or plumbing equipment assemblies.

Installation Notes

Installation is performed with a standard hex head wrench or socket driver sized for a 1/4-inch hex cap screw. De-energize or shut off any equipment before fastening components on live electrical or mechanical systems. Verify thread engagement and do not over-drive into thin or soft base materials. Consult applicable codes such as NEC or IFGC when using fasteners in code-regulated enclosures or mechanical systems.