Bowmalloy BOW36803 Hex Lock Nut 7/8-14 Grade 9

Product Description

The BOWMALLOY BOW36803 is a Grade 9 steel hex lock nut designed to maintain secure fastening under high-load and high-vibration conditions. Threaded at 7/8-14 with a right-hand thread direction, it features a Bowma-Guard cadmium waxed finish that provides corrosion resistance in demanding service environments. The nut measures 1.2969 inches across flats and 0.847 inches in height. It is suited for heavy-duty mechanical assemblies where standard Grade 5 or Grade 8 fasteners do not meet load requirements. Licensed mechanics, millwrights, and maintenance technicians working on industrial equipment, agricultural machinery, or heavy vehicles are the typical installers.

This hex lock nut is used in applications requiring a prevailing-torque locking mechanism in inch-series assemblies. The 7/8-14 fine thread pitch provides greater thread engagement and improved resistance to loosening compared to coarse-thread equivalents. The Bowma-Guard finish makes it appropriate for environments with exposure to moisture, light chemicals, or outdoor conditions. It ships in packages of 25 units, making it practical for shop stock or service fleet inventory.

Key Features

• Grade 9 steel construction for high-strength, high-torque applications
• 7/8-14 fine thread for greater thread engagement and vibration resistance
• Bowma-Guard cadmium waxed finish for corrosion protection in harsh environments
• Right-hand thread direction per inch measurement system standards
• Width across flats of 1.2969 inches (1-19/64 inches) for standard wrench compatibility
• Packaged in quantities of 25 for shop stock efficiency

Compatibility

Designed as an OEM-style replacement or service fastener for inch-series mechanical assemblies requiring a 7/8-14 hex lock nut in Grade 9 steel with a prevailing-torque locking feature.

Installation Notes

Installation should be performed by a qualified mechanic or millwright familiar with high-strength fastener torque requirements. Always consult the equipment manufacturer's torque specification chart for Grade 9 fasteners before installation. Ensure mating threads are clean, undamaged, and free of debris before engaging the nut. Do not reuse prevailing-torque lock nuts that have been previously removed, as the locking element may be compromised.