Value Collection 39655 Hex Lock Nut 1/2-13 Grade 8 Steel

Product Description

The VALUE COLLECTION 39655 is a nylon insert hex lock nut designed for high-strength fastening applications where vibration resistance is critical. Built to Grade 8 steel standards and finished with a yellow zinc dichromate coating for corrosion protection, this nut accepts a 1/2-13 UNC right-hand thread. The nylon insert deforms around mating threads to resist loosening under dynamic loads. At 39/64 inches high with 3/4 inches across the flats, it fits standard 3/4-inch hex tooling. Installed by mechanical contractors, industrial maintenance technicians, and equipment fabricators wherever a secure, reusable locking fastener is required.

This nut is suited for general industrial, mechanical, and structural assembly work using 1/2-13 UNC fasteners. It performs in environments subject to vibration, thermal cycling, or dynamic loading where a standard hex nut would back off over time. The yellow zinc dichromate finish provides a visible corrosion barrier appropriate for indoor and light-exposure applications. Minimum order quantity is 25 pieces per order.

Key Features

• Nylon insert locking style resists loosening under vibration and dynamic loads
• Grade 8 steel construction for high tensile and proof load capacity
• Yellow zinc dichromate finish provides corrosion resistance and visual identification
• 1/2-13 UNC right-hand thread — standard inch fastener series
• 3/4-inch width across flats fits common standard hex tooling
• Reusable design allows removal and reinstallation without sacrificing locking function in low-cycle applications

Compatibility

Designed for use with 1/2-13 UNC right-hand threaded fasteners in standard inch-series assemblies. Fits any application requiring a Grade 8 nylon insert hex lock nut at this thread size.

Installation Notes

Installation is performed with a standard 3/4-inch hex wrench or socket. Ensure mating bolt threads are clean and free of debris before driving the nut to final torque. Do not use impact tools at high speed, as this can damage the nylon insert and reduce locking effectiveness. Consult the applicable fastener torque specification for the joint design — do not rely on feel alone for Grade 8 hardware.