Bowmalloy 36147 Hex Head Cap Screw 5/8-11 X 1.5 in Grade 9

Product Description

The BOWMALLOY 36147 is a Grade 9 alloy steel hex head cap screw designed for high-strength fastening applications. Measuring 5/8-11 thread size with a 1.5-inch length under head, this fastener is fully threaded and finished with a clear zinc chromate coating for corrosion resistance. Grade 9 alloy steel provides greater tensile strength than standard Grade 5 or Grade 8 fasteners, making this screw well-suited for demanding mechanical and structural connections. Licensed tradespeople in mechanical, industrial, and heavy equipment fields rely on this grade for critical joint integrity.

This hex head cap screw is used in a range of industrial and commercial applications where high-strength inch-series fasteners are required. Typical install scenarios include equipment assembly, structural brackets, machinery mounting, and heavy-duty mechanical connections using standard 5/8-11 UNC thread engagement. The clear zinc chromate finish provides moderate corrosion protection suitable for indoor and light outdoor environments. Sold in packages of 25, this part accommodates both single-unit and bulk fastening tasks.

Key Features

• Grade 9 alloy steel construction for high tensile strength beyond standard Grade 8
• 5/8-11 UNC thread size with 1.5-inch length under head
• Fully threaded shank for maximum thread engagement
• Clear zinc chromate finish for corrosion resistance
• Inch measurement system for compatibility with standard UNC tooling
• Package quantity of 25 per unit sold

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application requiring a 5/8-11 UNC threaded fastener with a 1.5-inch grip length.

Installation Notes

Installation should be performed by a qualified mechanic or trades professional familiar with high-strength fastener requirements. Confirm mating thread condition and clean all contact surfaces before assembly. Apply appropriate torque per the applicable engineering specification or equipment manufacturer guidelines for Grade 9 fasteners at this diameter. Do not substitute Grade 9 fasteners in applications rated for lower grades without verifying joint design requirements.