Value Collection MP39623 Hex Lock Nut 3/8-16 Grade 8

Product Description

The VALUE COLLECTION MP39623 is a 3/8-16 hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a bright uncoated finish. The nylon insert creates interference with the mating thread to resist loosening from vibration or torque, making this nut a standard choice for high-strength fastening applications. At 29/64 inches in height and 9/16 inches across the flats, it follows UNC thread standards with a right-hand thread direction. Licensed trades and mechanical contractors working on structural assemblies, equipment mounting, and mechanical systems rely on this fastener type for reliable joint retention.

This hex lock nut is suited for general industrial, mechanical, and trade applications where a UNC 3/8-16 threaded fastener is required. It is appropriate for use in equipment assemblies, brackets, and mounting configurations across HVAC, plumbing, and electrical trade installations where vibration resistance is needed. The nylon insert style is compatible with standard hex wrenches and sockets sized for 9/16-inch across-flats dimensions.

Key Features

• Nylon insert locking style resists loosening under vibration without damaging mating threads
• Grade 8 steel construction provides high tensile and proof load strength
• 3/8-16 UNC thread size with right-hand thread direction
• Bright uncoated finish suitable for dry or protected installation environments
• 29/64-inch height and 9/16-inch width across flats conform to standard hex nut dimensions

Compatibility

Designed as an OEM-style replacement or maintenance fastener for any assembly requiring a 3/8-16 UNC hex lock nut with nylon insert in Grade 8 steel.

Installation Notes

Installation requires a standard 9/16-inch wrench or socket. Power down or de-energize any equipment before fastener service on mechanical or electrical assemblies. Do not reuse nylon insert lock nuts after removal, as the locking torque of the nylon insert degrades with each use cycle. Follow applicable mechanical codes and equipment manufacturer torque guidelines for the specific joint being fastened.