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The VALUE COLLECTION R52001626 is a 9/16-12 hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert creates prevailing torque resistance that prevents the nut from loosening due to vibration, shock, or thermal cycling. At 41/64 inches in height and 7/8 inches across the flats, this nut fits standard 9/16-12 UNC threaded fastener applications. The zinc yellow dichromate coating provides corrosion resistance. This fastener is installed by mechanical, industrial maintenance, and assembly technicians across a wide range of structural and equipment applications.
This hex lock nut is suited for high-strength bolted assemblies requiring reliable vibration resistance. Grade 8 steel construction makes it appropriate for demanding mechanical and structural connections in industrial equipment, heavy machinery, automotive assemblies, and general fabrication work. The UNC thread form is the standard for inch-series fasteners in North American trade and manufacturing environments. Right-hand threading follows conventional installation direction. Sold individually; minimum order quantity is 50 pieces.
Designed for use with 9/16-12 UNC inch-series threaded bolts and studs in standard hex nut applications requiring a nylon insert prevailing torque lock.
Installation is performed with a standard open-end or socket wrench sized for 7/8 inches across the flats. De-energize and lock out any equipment before performing fastener work on live machinery. Nylon insert lock nuts are generally intended for single-use applications; the locking torque of the nylon insert may degrade if the nut is removed and reused. Follow applicable torque specifications for Grade 8 fasteners as defined by the governing engineering or maintenance standard for the assembly.
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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