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The VALUE COLLECTION NLI20500NE-10LBBX is a nylon insert hex lock nut designed to resist loosening under vibration and torque. Built to a 1/2-13 UNC thread size with a right-hand thread direction, this fastener uses an interference-fit nylon insert to grip the mating bolt and maintain clamping force without requiring adhesives or secondary locking hardware. Constructed from Grade 2 steel with a zinc-plated finish, it provides basic corrosion resistance for general-purpose indoor and light-duty outdoor applications. The nut measures 39/64 inches in height with a 3/4-inch width across flats.
This hex lock nut is suited for a wide range of mechanical assembly and maintenance applications, including HVAC equipment panels, electrical enclosures, plumbing fixtures, and general structural fastening where vibration resistance is required. The standard UNC thread form makes it compatible with commonly available 1/2-13 bolts and threaded rod used across residential and commercial trade work. Maintenance technicians, HVAC installers, electricians, and general contractors will find this fastener appropriate for everyday service and assembly tasks.
Designed as a standard UNC hex lock nut for use with 1/2-13 inch-series bolts and threaded rod in general mechanical, HVAC, electrical, and plumbing assembly applications.
Installation requires a standard 3/4-inch wrench or socket. Power down or de-energize any equipment before fastener service where electrical contact is possible. The nylon insert is a single-use locking feature and may lose effectiveness if the nut is removed and reused; replace with a new nut when re-torquing is necessary. Follow applicable equipment manufacturer torque guidelines for the joint being assembled.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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