Value Collection R52001589 Hex Lock Nut 7/8-14 Grade 8

Product Description

The VALUE COLLECTION R52001589 is a 7/8-14 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a yellow zinc dichromate finish. The nylon insert creates prevailing torque by deforming slightly around the mating thread, resisting loosening from vibration, shock, and thermal cycling without requiring any secondary locking hardware. At 63/64 inches high and 1-1/4 inches across the flats, this nut meets standard UNF dimensional requirements for the 7/8-14 thread class. The right-hand thread direction is standard for general mechanical and structural fastening applications across industrial, agricultural, and heavy-equipment service work.

This hex lock nut is suited for bolted assemblies where vibration resistance is required and a one-time or limited-reuse locking fastener is acceptable. Typical applications include equipment frames, drivetrain components, suspension linkages, hydraulic cylinder rod ends, and structural brackets where Grade 8 tensile strength is specified. The yellow zinc dichromate finish provides a base level of corrosion resistance appropriate for indoor or protected outdoor environments. Minimum order quantity is 5 pieces.

Key Features

• Nylon insert locking style provides prevailing torque without secondary locking hardware
• Grade 8 steel construction for high tensile strength and shear resistance
• Yellow zinc dichromate finish for corrosion protection in moderate environments
• 7/8-14 UNF right-hand thread for compatibility with standard inch fastener systems
• 63/64 inches height and 1-1/4 inches width across flats per UNF dimensional standards

Compatibility

Designed as a standard UNF hex lock nut for use with 7/8-14 right-hand threaded bolts and studs requiring Grade 8 strength and nylon insert prevailing torque retention.

Installation Notes

Installation is performed with a standard 1-1/4 inch open-end, box-end, or socket wrench. Because the nylon insert is a one-time locking feature, remove and replace this nut if it has been previously installed and run down under load. Verify mating bolt thread condition before installation, as damaged threads will reduce nylon insert effectiveness. Follow applicable torque specifications for Grade 8 fasteners at this thread size per the equipment manufacturer or relevant industry standards.