Value Collection R52001636 Hex Lock Nut 7/16-20 Grade 8

Product Description

The VALUE COLLECTION R52001636 is a 7/16-20 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert deforms around mating threads when driven down, creating a prevailing torque that resists vibration-induced loosening without the need for secondary locking hardware. At 15/32 inches high with a 11/16-inch width across flats, this nut fits standard hex wrenches and sockets. The zinc yellow dichromate coating provides corrosion resistance suitable for general industrial and mechanical fastening applications. Installers in HVAC, mechanical, and structural assembly work will encounter this nut in high-vibration fastening situations where joint integrity is critical.

This hex lock nut is used in light to heavy mechanical assemblies requiring a reliable, reusable locking fastener on 7/16-20 UNF threaded fasteners. The Grade 8 steel construction makes it appropriate for high-strength bolted connections in equipment frames, brackets, and structural components. Right-hand thread direction is standard for the majority of mechanical fastening applications. This nut is sold individually but requires a minimum order quantity of 100 units, making it suitable for maintenance stock, production runs, and service shop inventory.

Key Features

• Nylon insert locking style resists loosening under vibration without secondary locking hardware
• Grade 8 steel construction for high-strength fastening applications
• 7/16-20 UNF thread specification, right-hand thread direction
• Zinc yellow dichromate finish provides corrosion resistance
• 11/16-inch width across flats fits standard hex tooling
• 15/32-inch height — compact profile for space-limited assemblies

Compatibility

Designed for use with 7/16-20 UNF threaded fasteners in inch-measurement mechanical assemblies requiring a prevailing-torque hex lock nut with nylon insert.

Installation Notes

Installation is performed with a standard hex wrench or socket sized to 11/16 inches. De-energize and secure all equipment before working on fastened assemblies. Nylon insert lock nuts are reusable but should be inspected after removal — replace if the nylon insert shows deformation that prevents adequate prevailing torque. Follow applicable fastener torque tables for Grade 8 hardware per the relevant mechanical or structural code for your application.