Bowmalloy 36012 Hex Head Cap Screw 1/4-20 X 3 in Grade 9

Product Description

The BOWMALLOY 36012 is a Grade 9 alloy steel hex head cap screw designed for high-strength fastening applications. It features a 1/4-20 thread size and a 3-inch length under head with partial threading. The clear zinc chromate finish provides corrosion resistance for use in demanding service environments. This fastener is specified by mechanical contractors, millwrights, HVAC installers, and industrial maintenance professionals who require a higher tensile strength rating than standard Grade 5 or Grade 8 hardware. The inch-system sizing makes it compatible with standard SAE tooling and hardware.

The 36012 is suited for structural and mechanical fastening in light industrial, HVAC equipment assembly, and trade service work where Grade 9 alloy steel strength is called for. The partial threading allows for clamping force across thicker material stacks without thread engagement interfering with the joint. It is sold in packages of 50 pieces, making it practical for service vans, job-site kits, and shop stock.

Key Features

• Grade 9 alloy steel construction for high tensile strength fastening
• 1/4-20 thread size in the inch measurement system
• 3-inch length under head with partial threading
• Clear zinc chromate finish for corrosion resistance
• UNSPSC Code 31161501 for procurement and catalog compliance

Compatibility

Designed as a standard inch-series hex head cap screw compatible with 1/4-20 threaded fastener applications requiring Grade 9 alloy steel strength and a clear zinc chromate finish.

Installation Notes

Installation should be performed by a qualified mechanic or trade professional using a properly sized hex wrench or socket. Always ensure the mating threaded hole or nut meets or exceeds the Grade 9 tensile rating to avoid fastener joint failure. De-energize and lock out any equipment before replacing or installing fasteners in live mechanical assemblies. Follow applicable industry standards and equipment manufacturer guidelines for torque and joint design.