Value Collection R52001683 Hex Lock Nut 5/16-24 Grade 8

Product Description

The VALUE COLLECTION R52001683 is a 5/16-24 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert creates interference with the mating thread, resisting loosening caused by vibration and torque. At 23/64 inches high with a 1/2-inch width across flats, this nut is sized for standard 5/16-inch fastener applications. The zinc yellow dichromate coating provides a baseline level of corrosion resistance. Installation requires a right-hand thread direction. Sold individually with a minimum order quantity of 100 units.

This lock nut is suited for mechanical, industrial, and light structural assembly applications where vibration resistance is required on fine-thread fastener systems. The 5/16-24 UNF thread designation makes it appropriate for precision assemblies, automotive, and equipment manufacturing environments where fine pitch threading is specified. Electricians, millwrights, and general mechanical trades commonly use this nut type when securing components subject to dynamic loads or continuous vibration.

Key Features

• Nylon insert locking style resists loosening under vibration without damaging mating threads
• Grade 8 steel construction for high tensile strength applications
• Zinc yellow dichromate finish provides corrosion resistance
• 5/16-24 UNF right-hand thread for fine-pitch fastener systems
• Standard hex profile — 1/2 inch across flats — fits common wrenches and sockets
• Height of 23/64 inches for compact installation clearance

Compatibility

Designed for use with 5/16-24 UNF right-hand threaded fasteners in inch-measurement mechanical assemblies requiring a nylon insert hex lock nut.

Installation Notes

This nut should be installed by hand until the nylon insert contacts the bolt, then torqued with a standard 1/2-inch open-end or box wrench. Power down or de-energize any associated equipment before performing fastener service. Nylon insert lock nuts are generally single-use — the insert may lose clamping effectiveness if removed and reinstalled on the same fastener. Follow applicable mechanical or structural codes for torque requirements based on joint design.