Bowmalloy 36000 Hex Head Cap Screw 1/4-20 X 1/2 in Grade 9

Product Description

The BOWMALLOY 36000 is a fully threaded hex head cap screw engineered for high-strength fastening applications. Built from Grade 9 alloy steel with a zinc-plated clear chromate finish, this fastener delivers superior tensile strength compared to standard Grade 5 or Grade 8 hardware. The 1/4-20 thread size and 1/2-inch length under head make it well-suited for compact, high-load connections where a standard hex wrench or socket driver provides the necessary torque. The clear chromate coating adds corrosion resistance while maintaining a clean, low-profile appearance. Machinists, millwrights, and mechanical contractors regularly specify Grade 9 alloy steel fasteners for demanding structural and equipment-mounting applications.

This cap screw is used across a wide range of industrial and mechanical installations where elevated clamping force is required. Common applications include equipment mounting, structural assemblies, and component fastening in HVAC equipment frames, electrical enclosures, pump housings, and general mechanical assemblies. The fully threaded shank maximizes thread engagement across the full 1/2-inch grip length, making it effective in thinner material stacks where partial threading would reduce holding power.

Key Features

• Grade 9 alloy steel construction for higher tensile strength than Grade 5 or Grade 8 equivalents
• Fully threaded shank maximizes thread engagement for the entire 1/2-inch length under head
• 1/4-20 unified coarse thread for broad compatibility with standard tapped holes and nuts
• Zinc-plated clear chromate finish provides corrosion resistance in typical indoor and light-duty outdoor environments
• Inch-system dimensions for use with standard SAE tooling

Compatibility

Designed as a direct-fit fastener for any application requiring a 1/4-20 unified coarse thread hex head cap screw with a 1/2-inch length under head in Grade 9 alloy steel.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or contractor familiar with fastener torque requirements for Grade 9 alloy steel hardware. Always verify that the mating tapped hole or nut is rated for the clamping load being applied. Use appropriate hex socket or wrench tooling sized for a 1/4-inch hex head cap screw, and follow applicable industry torque specifications for the fastener grade and size. Inspect threads on both the fastener and the mating component for damage or contamination before installation.