Bowmalloy BOWMP36786 Hex Lock Nut 5/8-11 Grade 9

Product Description

The BOWMALLOY BOWMP36786 is a Grade 9 steel hex lock nut with a 5/8-11 thread size and a right-hand thread direction. It carries a Bowma-Guard finish, which provides corrosion resistance suited to demanding industrial and mechanical applications. The nut measures 0.545 inches in height and 15/16 inches (0.9375 inches) across the flats. Sold in packs of 10, this fastener is installed by millwrights, pipefitters, maintenance mechanics, and other trade professionals who need a reliable, high-strength locking nut for structural or equipment assembly work.

This hex lock nut is appropriate for use in heavy industrial, commercial, and mechanical assembly applications where vibration resistance and joint integrity are critical. The Grade 9 material grade offers higher tensile strength than standard Grade 5 or Grade 8 fasteners, making it a fit for high-load bolted connections in equipment, structural frames, and machinery. It follows inch measurement standards and is compatible with 5/8-11 UNC fastener systems.

Key Features

• Grade 9 steel construction for high tensile strength in demanding bolted connections
• 5/8-11 thread size with right-hand thread direction for standard UNC compatibility
• Bowma-Guard finish provides corrosion protection for extended service life
• 15/16 inch (0.9375 inches) width across flats for standard wrench fitment
• 0.545 inch height for compact locking profile
• Sold in packs of 10 to support multi-fastener jobs

Compatibility

Designed for use with 5/8-11 UNC inch-system threaded bolts and studs in industrial, commercial, and mechanical assembly applications requiring a high-strength hex lock nut.

Installation Notes

Installation is performed by qualified mechanics, millwrights, or maintenance technicians following applicable torque and fastener standards for Grade 9 hardware. De-energize or lock out equipment before accessing any bolted assembly under load. Use a properly sized wrench or socket matching the 15/16 inch across-flats dimension to avoid rounding the nut. Follow applicable ASME or industry fastener specifications for joint preload and re-torque intervals.