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The VALUE COLLECTION 34271 is a hex lock nut with a nylon insert locking style, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert creates prevailing torque that resists loosening from vibration and dynamic loads without damaging the mating thread. Standing 0.25 inches tall with a 0.375-inch width across flats, this fastener follows Unified National Coarse (UNC) inch-series threading with a right-hand thread direction. It is well suited for general mechanical assembly applications where a reusable, vibration-resistant fastener is required.
This hex lock nut is used in light-duty mechanical and structural assembly across residential and commercial applications. Typical installation scenarios include HVAC equipment frames, electrical enclosures, plumbing support hardware, and general trade-work fastening where a standard UNC threaded connection is in use. The zinc-plated finish provides a basic level of corrosion resistance for indoor and sheltered environments. These nuts are sold individually with a minimum order quantity of 100 pieces.
Designed as a general-purpose replacement or new-installation hex lock nut for any application using a matching UNC inch-series threaded stud or bolt.
Installation is performed with a standard open-end or combination wrench sized to the 0.375-inch width across flats. Ensure the mating bolt or stud threads are clean and free of debris before driving the nut. The nylon insert is a single-use locking element by design and provides reduced locking torque if removed and reinstalled repeatedly. Follow applicable mechanical assembly codes and manufacturer torque guidance for the specific joint being fastened.
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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