Bowmalloy BOW36615 Hex Nut 1/2-20 Grade 9 Steel

Product Description

The BOWMALLOY BOW36615 is a Grade 9 steel hex nut with a 1/2-20 thread size, designed for high-strength fastening applications where elevated tensile and proof load requirements must be met. The nut features a Bowma-Guard zinc-plated clear chromate finish that provides corrosion resistance in demanding service environments. At 0.75 inches across flats and 0.437 inches in height, this nut conforms to ANSI/ASME B18.2.2 dimensional standards. It carries a hardness rating of 26-36 HRC, making it suitable for heavy mechanical assemblies. Licensed tradespeople and industrial maintenance technicians are the typical installers for this hardware.

This hex nut is used in structural, mechanical, and industrial fastening applications that call for fine-thread, high-grade hardware. The 1/2-20 fine thread pitch provides increased thread engagement and improved resistance to vibration loosening compared to coarse-thread alternatives. Right-hand thread direction follows standard installation convention. Typical use cases include equipment mounting, frame assemblies, and retrofit applications in industrial, commercial, and trade service settings.

Key Features

• Grade 9 steel construction for high-strength fastening performance
• Bowma-Guard zinc-plated clear chromate finish for corrosion resistance
• 1/2-20 fine right-hand thread for enhanced vibration resistance
• Hardness rated at 26-36 HRC for demanding mechanical service
• Meets ANSI/ASME B18.2.2 dimensional standard
• 0.75 inches across flats, compatible with standard 3/4-inch wrenching tools

Compatibility

Designed as a standard hex nut replacement for 1/2-20 fine-thread bolt applications conforming to ANSI/ASME B18.2.2 specifications.

Installation Notes

Installation is performed by licensed mechanics, millwrights, or maintenance technicians using standard 3/4-inch open-end, box, or socket wrenches. Always ensure mating bolt thread size and grade are compatible before installation. De-energize and lock out any equipment before servicing fasteners on live mechanical assemblies. Follow applicable industry standards and equipment manufacturer guidelines for proper torque procedures.