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The VALUE COLLECTION KP66131 is a 1/2-13 hex lock nut that uses a distorted thread locking style to resist loosening under vibration and torque load. Made from Grade C steel with a zinc-plated and waxed finish, this nut offers corrosion resistance and smooth installation in standard UNC threaded assemblies. The distorted thread design creates mechanical interference when engaged, eliminating the need for separate locking hardware such as washers or adhesives. This package contains 50 nuts, making it suitable for production runs, maintenance stock, or multi-fastener repair jobs. Licensed tradespeople and experienced DIYers working in mechanical, plumbing, electrical, or HVAC panel applications will find this a reliable all-around fastener choice.
This hex lock nut is intended for use in general-purpose fastening applications where a standard 1/2-13 UNC thread is specified. The right-hand thread direction follows the universal convention for most mechanical assemblies. The zinc-plated with wax finish provides light corrosion protection suitable for indoor and semi-protected environments. It is commonly used in equipment assembly, structural bracketing, conduit support, and mechanical panel fabrication across commercial and light industrial trades.
Designed as a standard UNC replacement or stocking hex lock nut for any application specifying a 1/2-13 distorted thread hex lock nut in Grade C steel with a zinc-plated finish.
Install using a standard 3/4-inch hex wrench or socket. Power down or de-energize any equipment before accessing fastened assemblies in electrical or HVAC enclosures. Do not over-torque, as distorted thread nuts are designed for hand-tool installation within standard fastener torque ranges for the thread size. Confirm thread engagement is fully seated before applying final torque.
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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