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The VALUE COLLECTION B52001677 is a 1-8 UNC hex lock nut with a nylon insert locking style, manufactured from Grade 8 steel in an uncoated finish. The nylon insert provides prevailing-torque resistance, preventing loosening under vibration and dynamic loading without requiring thread-locking compounds. Standing 1-3/64 inches high with a width across flats of 1-7/16 inches and a right-hand thread direction, this fastener is sized for heavy-duty bolted connections. It is sold individually with a minimum order quantity of 50 pieces, making it appropriate for MRO procurement and production-line applications.
This hex lock nut is suited for structural, mechanical, and industrial assembly applications where reliable joint integrity under vibration is required. The 1-8 UNC thread size targets large-diameter bolting found in heavy equipment, fabricated steel structures, agricultural machinery, and industrial frames. Licensed tradespeople and assembly technicians working with Grade 8 fastener hardware will find this nut consistent with standard heavy-duty bolting practices.
Designed as a standard-fitment prevailing-torque hex lock nut for 1-8 UNC threaded fasteners in Grade 8 bolted assemblies.
Installation should be performed by qualified mechanical assemblers or tradespeople familiar with Grade 8 fastener torque requirements. Power down or de-energize any equipment before accessing bolted joints in live systems. Use a properly sized wrench or socket matched to the 1-7/16 inch across-flats dimension to avoid rounding. Nylon insert lock nuts are generally rated for single use in critical joints; consult applicable engineering or maintenance specifications before reusing removed hardware.
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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