Value Collection 34274 Hex Lock Nut 3/8-16 Nylon Insert

Product Description

The VALUE COLLECTION 34274 is a 3/8-16 hex lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert creates interference with mating threads to resist loosening caused by vibration and torque. At 15/32 inches high with a 9/16-inch width across flats, this fastener fits standard 9/16-inch wrenches and sockets. It is installed by licensed trades and maintenance professionals wherever a reliable, reusable locking fastener is required on 3/8-16 UNC threaded rod, bolt, or stud.

This nut is suited for residential and light commercial applications across HVAC, plumbing, electrical, and general mechanical assembly. Typical uses include securing equipment mounting hardware, pipe hangers, electrical enclosure assemblies, and structural brackets where vibration or thermal cycling could compromise a standard non-locking nut. The right-hand thread orientation is standard for all UNC fastener installations.

Key Features

• Nylon insert locking style resists loosening under vibration without damaging mating threads
• 3/8-16 UNC thread size with right-hand thread direction
• Grade 2 steel construction for general-purpose mechanical fastening
• Zinc-plated finish provides basic corrosion resistance in dry and low-moisture environments
• 15/32 inches height and 9/16 inches width across flats for standard wrench fitment

Compatibility

Designed as a standard replacement or new-installation hex lock nut for any 3/8-16 UNC threaded fastener application in residential or commercial mechanical, HVAC, plumbing, or electrical assembly work.

Installation Notes

Install using a standard 9/16-inch wrench or socket. Power down or de-energize any equipment before working on fastened assemblies. Nylon insert nuts are intended for use at temperatures within the service range of the nylon element — avoid applications with sustained elevated heat that may degrade the insert. Follow applicable codes such as NEC or IFGC for fastener specifications in regulated installations.