Value Collection MP39654 Hex Lock Nut 7/16-14 Grade 8

Product Description

The VALUE COLLECTION MP39654 is a 7/16-14 UNC hex lock nut with a nylon insert locking style, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert provides prevailing torque resistance, keeping the nut secure against vibration and loosening in demanding mechanical assemblies. At 29/64 inches high with a 5/8-inch width across flats, this fastener fits standard 7/16-14 threaded fasteners and installs with common hand tools. The zinc yellow dichromate coating adds corrosion resistance while serving as a visual indicator of Grade 8 material strength. This nut is sold individually with a minimum order quantity of 25 pieces.

This hex lock nut is suited for use in high-vibration mechanical assemblies across HVAC equipment, structural steel, automotive, and general industrial applications where a reliable prevailing-torque fastener is required. The right-hand thread direction and UNC thread standard make it compatible with the most common bolt and stud configurations used in trade and manufacturing settings. Licensed mechanics, millwrights, and maintenance technicians regularly use this fastener type when securing brackets, frames, and mechanical components that experience sustained vibration or cyclic loading.

Key Features

• Nylon insert provides prevailing torque resistance to prevent loosening from vibration
• Grade 8 steel construction for high tensile strength applications
• Zinc yellow dichromate finish for corrosion resistance and Grade 8 identification
• 7/16-14 UNC right-hand thread — matches the most common inch-standard fastener systems
• 29/64 inches height with 5/8 inches width across flats — fits standard hex wrenches and sockets
• Sold individually; minimum order quantity of 25 pieces per order

Compatibility

Designed as a standard UNC prevailing-torque replacement or new-installation hex lock nut for any 7/16-14 threaded bolt or stud requiring a Grade 8 nylon insert lock nut in inch-standard mechanical assemblies.

Installation Notes

Install using a standard 5/8-inch wrench or socket. Nylon insert lock nuts are generally rated for single use — once the nylon has been fully engaged and removed, the locking effectiveness may be reduced, so replacement with a new nut is recommended after removal. Ensure the mating bolt or stud is clean and free of damage before installation. Follow applicable torque specifications for Grade 8 fasteners as defined by the governing mechanical or structural standard for the application.