Bowmalloy 36603 Hex Nut 3/8-16 Grade 9 Zinc-plated

Product Description

The BOWMALLOY 36603 is a Grade 9 steel hex nut sized for 3/8-16 unified coarse thread applications. It features a zinc-plated clear chromate finish that provides corrosion resistance in general industrial and mechanical assemblies. The nut measures 9/16 inches across flats and carries a hardness rating of 26-36 HRC, making it suitable for high-strength fastening requirements. Right-hand thread engagement conforms to ANSI/ASME B18.2.2 dimensional standards. Licensed mechanics, millwrights, pipefitters, and maintenance technicians install this fastener in structural, equipment, and process-system assemblies where a reliable, high-hardness hex nut is required.

This hex nut is used in commercial and industrial settings wherever Grade 9 high-strength fastening is called for. Typical applications include machinery frames, structural steel connections, and equipment mounting where elevated clamp load and hardness beyond standard Grade 5 or Grade 8 specs are necessary. The zinc clear chromate finish suits both indoor and moderately protected outdoor environments. Sold in packages of 100, this nut is stocked for maintenance, repair, and OEM assembly operations.

Key Features

• Grade 9 steel construction with 26-36 HRC hardness for high-strength fastening
• Zinc-plated clear chromate finish for corrosion resistance
• 3/8-16 unified coarse right-hand thread
• 9/16 inches across flats, conforming to ANSI/ASME B18.2.2
• Packaged in quantities of 100 for maintenance and assembly use

Compatibility

Designed as a standard replacement or assembly hex nut for 3/8-16 threaded fastener applications requiring Grade 9 material per ANSI/ASME B18.2.2.

Installation Notes

Installation is performed by qualified mechanics, millwrights, or maintenance technicians using standard open-end, box, or socket wrenches sized for 9/16 inches across flats. De-energize, depressurize, or otherwise isolate the assembly before replacing fasteners in any live system. Follow applicable torque specifications from the equipment manufacturer or relevant engineering standards for Grade 9 fasteners. Inspect mating threaded components for damage or contamination before assembly.