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The VALUE COLLECTION B52001655 is a 3/4-10 hex lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert creates interference with the bolt threads to resist loosening from vibration and torque without damaging the mating fastener. At 13/32 inches in height and 1-1/16 inches across the flats, this nut conforms to UNC thread standards and suits standard 3/4-inch bolt applications. It is commonly installed by HVAC technicians, plumbers, electricians, and general mechanical tradespeople wherever a reliable, reusable prevailing-torque fastener is required.
This hex lock nut is suited for general-purpose mechanical assemblies in residential and light commercial applications. Typical uses include equipment mounting, pipe hanger installations, electrical panel supports, and HVAC unit framework fastening where vibration or thermal cycling could compromise a standard hex nut. The zinc plating provides basic corrosion resistance for indoor and sheltered outdoor environments. Right-hand thread direction matches standard UNC fastener practice, making it a straightforward drop-in for 3/4-10 bolt and stud applications across trade disciplines.
Designed as a standard replacement or new-installation hex lock nut for any 3/4-10 UNC threaded bolt or stud application requiring a prevailing-torque nylon insert nut.
Installation requires a standard 1-1/16 inch wrench or socket. Power down or de-energize any associated equipment before working on fastened assemblies in electrical or mechanical enclosures. The nylon insert is rated for single use in critical applications — inspect the insert for deformation if reusing the nut. Do not use in applications exceeding the temperature limits of the nylon insert material or in direct contact with strong solvents.
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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