Value Collection R50000017 Hex Lock Nut 1/2-20 Zinc

Product Description

The VALUE COLLECTION R50000017 is a 1/2-20 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert deforms around the mating thread under torque, creating prevailing-torque resistance that keeps the nut from backing off under vibration or dynamic loading. At 39/64 inches high with a 3/4-inch across-flats dimension, this fastener fits standard 1/2-inch drive and wrench tooling. Plumbers, electricians, HVAC technicians, and general mechanical trades use this style of lock nut wherever a reliable, reusable locking fastener is required on inch-series threaded assemblies.

This nylon insert hex lock nut is suited for light to medium-duty mechanical assemblies in residential and commercial applications. Common use cases include equipment mounting, panel fastening, pipe hanger assemblies, and any joint subject to vibration where a standard nut would loosen over time. The right-hand thread direction is compatible with the vast majority of standard inch-series fastener applications. Minimum order quantity for this SKU is 50 pieces, sold as single units per package.

Key Features

• Nylon insert provides prevailing-torque locking without adhesives or separate locking hardware
• 1/2-20 UNF thread for fine-pitch engagement and improved clamp load retention
• Grade 2 steel construction suitable for general-purpose mechanical assemblies
• Zinc-plated finish provides basic corrosion resistance in indoor and sheltered environments
• Right-hand thread direction matches standard inch-series fastener tooling
• 3/4 inch across flats accepts standard 3/4-inch open-end, box, or socket wrenches

Compatibility

Designed for use with 1/2-20 UNF male-threaded fasteners following inch-series standards. Suitable as a general-purpose prevailing-torque lock nut in mechanical, electrical, and plumbing support assemblies where a 1/2-20 fine-thread fastener is specified.

Installation Notes

Installation requires a standard 3/4-inch wrench or socket. Nylon insert lock nuts are designed for use on clean, undamaged threads — inspect mating bolts or studs before assembly. The nylon insert is rated for a limited number of reuse cycles; replace the nut if the locking torque feels significantly reduced on reinstallation. Ensure the joint is de-energized or depressurized as appropriate to the system before performing any fastener service.