Value Collection 34283 Hex Lock Nut 5/16-24 Nylon Insert

Product Description

The VALUE COLLECTION 34283 is a hex lock nut with a nylon insert, designed to resist loosening under vibration and dynamic loads. It is sized for 5/16-24 UNF (Unified National Fine) thread applications and manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance. Standing 23/64 inches high with a 1/2-inch width across flats, this standard-profile nut is a workhorse fastener used across mechanical, HVAC, plumbing, and electrical panel assemblies wherever a reliable prevailing-torque lock is needed. Installation requires a standard 1/2-inch open-end or box wrench.

This nylon insert lock nut is suited for light- to medium-duty fastening in residential and commercial mechanical systems. Common applications include equipment mounting, bracket assemblies, fan blade retention, and control panel hardware where vibration or thermal cycling could cause a standard nut to back off over time. The right-hand thread direction matches the vast majority of UNF fastener assemblies in trade work. These nuts are sold individually but require a minimum order quantity of 100 units, making them appropriate for stocking in shop inventory or field service kits.

Key Features

• Nylon insert provides prevailing-torque locking without adhesives or secondary locking hardware
• 5/16-24 UNF right-hand thread for compatibility with standard fine-thread fastener assemblies
• Grade 2 steel construction suitable for general-purpose mechanical applications
• Zinc-plated finish offers baseline corrosion resistance in dry to mildly humid environments
• Compact profile at 23/64 inches high fits in space-constrained assemblies

Compatibility

Designed for use with 5/16-24 UNF threaded bolts and studs in general-purpose mechanical, HVAC, electrical, and plumbing equipment assemblies.

Installation Notes

Installation should be performed by qualified tradespeople or mechanical technicians following applicable equipment service procedures. De-energize or shut down any equipment before fastener service to prevent injury. Use a properly sized 1/2-inch wrench or socket to drive the nut; avoid over-torquing, which can damage or deform the nylon insert and reduce locking effectiveness. The nylon insert is rated for single-use locking — once fully torqued and removed, the nut should be replaced rather than reused.