Bowmalloy BOW36619 Hex Nut 7/8-14 Grade 9 Steel

Product Description

The BOWMALLOY BOW36619 is a Grade 9 steel hex nut in a 7/8-14 thread size, finished with a zinc-plated clear chromate coating marketed under the Bowma-Guard designation. Designed for high-strength fastening applications, this nut meets ANSI/ASME B18.2.2 dimensional standards. The right-hand thread profile and hardness rating of 26-36 HRC make it suitable for demanding mechanical assemblies where joint integrity and corrosion resistance are priorities. Machinists, maintenance technicians, and assembly professionals working in industrial, agricultural, and heavy-equipment environments commonly specify this grade for critical bolted connections.

This hex nut is intended for use in high-load fastening applications that call for Grade 9 strength and a corrosion-resistant finish. The zinc-plated clear chromate surface provides a baseline level of protection against oxidation in moderate exposure environments. It is commonly used in hydraulic system assemblies, heavy machinery, and structural connections where a fine 7/8-14 thread engagement is specified for precise preload control.

Key Features

• Grade 9 steel construction with 26-36 HRC hardness for high-strength fastening
• 7/8-14 right-hand thread for fine-pitch engagement and precise preload
• Zinc-plated clear chromate (Bowma-Guard) finish for corrosion resistance
• Width across flats of 1.297 inches (1-19/64 inches nominal) for standard wrench fit
• Meets ANSI/ASME B18.2.2 dimensional standard
• Nut height of 0.746 inches for full thread engagement depth

Compatibility

Designed as a replacement or service hex nut for 7/8-14 fine-thread fastener applications requiring Grade 9 steel and ANSI/ASME B18.2.2 compliance.

Installation Notes

Installation should be performed by qualified mechanical technicians familiar with high-strength fastener procedures. Always verify mating bolt grade and thread specification before assembly. Follow applicable torque specifications from the equipment manufacturer or relevant industry standards. Inspect threads for damage or contamination prior to installation, and replace any fastener that shows signs of corrosion, galling, or deformation.