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The VALUE COLLECTION R52001653 is a nylon insert hex lock nut designed to resist loosening under vibration and torque loads. Manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance, this fastener follows inch-system UNC thread standards and features a right-hand thread direction. At 9/64 inches high with a 5/16-inch width across flats, it is a compact, low-profile nut suited to light-duty mechanical and structural assemblies. The nylon insert deforms around the mating thread to create a prevailing torque that holds the nut in place without additional locking hardware.
This nut is used in general mechanical assembly, light structural work, and equipment fabrication where vibration resistance is required but heavy-duty or military-grade fastener specifications are not. Typical applications include HVAC equipment panels, electrical enclosures, plumbing fixture mounting, and light industrial equipment frames. It is installed by maintenance technicians, assemblers, and trade professionals working with standard UNC-threaded fasteners in inch-measurement systems.
Designed as a standard UNC inch-system hex lock nut compatible with Grade 2 or higher UNC-threaded bolts and studs in light-duty mechanical and structural assemblies.
Installation is performed by hand and finished with a standard open-end or combination wrench sized to the 5/16-inch across-flats dimension. Because the nylon insert provides prevailing torque resistance, slightly more rotational force is required compared to a standard hex nut. The nylon insert is a single-use locking feature and may not provide full locking performance if the nut is removed and reused. Ensure the mating fastener threads are clean and free of damage before installation.
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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