Nylon Insert Nuts 1/4-20 10pk

The ALLSTAR PERFORMANCE Nylon Insert Nuts 1/4-20 10-pack features hex head locking nuts with nylon inserts designed to prevent fastener loosening under vibration and repeated assembly cycles. These steel nuts are zinc oxide plated for corrosion resistance, making them suitable for automotive, machinery, and general industrial assembly applications where vibration resistance is critical.

Each nut in this set conforms to 1/4-20 thread specifications, with a nylon insert that provides elastic locking force without requiring re-torquing after initial installation. The nylon insert deforms slightly around the bolt threads, creating friction that resists loosening even when subjected to thermal cycling, engine vibration, or dynamic loads typical in performance and racing applications. The zinc oxide finish provides base-level corrosion protection suitable for engine bays and dry storage environments, though stainless steel alternatives are available for saltwater or harsh outdoor exposure.

This 10-pack is ideal for engine builders, restoration specialists, and fabricators who need reliable locking fasteners for carburetor mounts, valve cover bolts, intake manifold fasteners, and other critical assembly points where vibration-induced loosening poses a risk. The standard 1/4-20 thread pitch is one of the most common sizes across automotive and small-engine assembly, making this pack a practical addition to any shop or garage toolkit.

Nylon insert lock nuts are a proven standard in high-vibration environments and are specified across the racing, marine, and industrial sectors. They are single-use fasteners — the nylon insert is designed to be replaced when reused repeatedly — so these nuts are economical for initial assembly and rebuild applications where fasteners are discarded rather than salvaged.

SKU ALL16010-10 contains 10 units and ships at 0.1 lbs, packed for convenient storage and transport to the job site or work bench.