Bowmalloy BOWMP36131 Hex Head Cap Screw 9/16-12 Grade 9

Product Description

The BOWMALLOY BOWMP36131 is a fully threaded hex head cap screw engineered for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 9 alloy steel, this fastener delivers superior tensile strength compared to standard Grade 5 and Grade 8 hardware, making it a reliable choice where joint integrity under heavy load or vibration is critical. The Bowma-Guard finish provides corrosion resistance for use in demanding service environments. With a 9/16-12 thread and a 1-1/2 inch length under head, this screw is sized for medium-to-heavy duty connections in equipment maintenance and fabrication work.

This hex head cap screw is suited for use in industrial machinery, heavy equipment, structural steel connections, and mechanical assemblies requiring ASTM-grade high-strength fasteners. Fully threaded along its entire length, it allows for maximum thread engagement across a range of joint thicknesses. Licensed mechanics, millwrights, maintenance technicians, and structural fabricators regularly specify Grade 9 cap screws in applications where standard Grade 8 hardware does not meet load or torque requirements.

Key Features

• Grade 9 alloy steel construction for high-strength fastening
• Fully threaded shank for maximum thread engagement at any grip length
• Bowma-Guard finish for enhanced corrosion resistance
• 9/16-12 UNC thread size for compatibility with standard inch-series hardware
• 1-1/2 inch length under head suits medium-to-heavy duty joint configurations

Compatibility

Designed as an OEM-style or aftermarket replacement hex head cap screw for industrial and mechanical assemblies requiring a 9/16-12 UNC thread, 1-1/2 inch length, fully threaded, Grade 9 alloy steel fastener with an inch-system thread standard.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician familiar with high-strength fastener procedures. Always verify that mating nuts, tapped holes, or threaded inserts are rated for Grade 9 load requirements before assembly. Follow applicable torque specifications from the equipment manufacturer or relevant fastener standards for 9/16-12 Grade 9 hardware. Do not reuse fasteners that show signs of thread damage, stretching, or corrosion.