Bowmalloy BOW36790 Hex Lock Nut 1-1/8-7 Grade 9

Product Description

The BOWMALLOY BOW36790 is a Grade 9 steel hex lock nut designed for high-strength fastening applications where vibration resistance and clamping integrity are critical. Threaded at 1-1/8-7 inch right-hand thread, this nut measures 31/32 inches high and 1-11/16 inches across the flats. The Bowma-Guard finish provides corrosion resistance suited to demanding service environments. This fastener is installed by industrial maintenance technicians, millwrights, and mechanical contractors working on heavy equipment, structural assemblies, and high-load mechanical connections.

This hex lock nut is appropriate for use in industrial, commercial, and heavy-duty mechanical applications where a standard hex nut is insufficient and a locking fastener is required. The 1-1/8-7 thread size positions this nut for large-diameter bolted joints commonly found in machinery, structural steel, and equipment mounting. Sold in packs of 10, it suits both single-use repair jobs and small-volume stocking needs.

Key Features

• Grade 9 steel construction for high tensile strength and fatigue resistance
• 1-1/8-7 inch right-hand thread for compatibility with standard large-diameter fastener systems
• Bowma-Guard finish provides corrosion protection in harsh service environments
• 31/32 inch height and 1-11/16 inch width across flats for standard wrench engagement
• Hex lock nut design resists loosening under vibration and dynamic loads
• Sold in packs of 10 for convenience on single repairs or light stocking

Compatibility

Designed as a replacement or service hex lock nut for 1-1/8-7 inch right-hand threaded bolts and studs in industrial and heavy-duty mechanical assemblies.

Installation Notes

Installation of large-diameter hex lock nuts typically requires a properly sized open-end or box wrench and should follow torque specifications outlined in the equipment service manual or applicable ASME standards. Ensure mating bolt threads are clean and undamaged before installation. Do not exceed the rated torque for the fastener grade. Lock nut engagement should be verified after initial installation and re-checked following any significant load or vibration event.