Value Collection C712202 Hex Lock Nut 5/16-18 100 Pack

Product Description

The VALUE COLLECTION C712202 is a 5/16-18 UNC hex lock nut with a distorted-thread locking style, designed to resist loosening under vibration and dynamic loads without requiring a separate locking element. The nut is manufactured from Grade B steel with a zinc-plated and wax-plated finish that provides corrosion resistance and eases installation torque. At 17/64 inches high with a 1/2-inch width across flats, it fits standard hex tooling and sits within a low-profile envelope. This fastener is sold in a quantity of 100 per package, suited for production, maintenance, or repair applications where a reliable all-metal locking nut is specified.

This hex lock nut is used across mechanical, HVAC, plumbing, and structural assembly applications where vibration or thermal cycling may loosen standard fasteners. The distorted-thread design creates prevailing torque by deforming a portion of the thread form, locking the nut in place without adhesives, nylon inserts, or secondary hardware. It is appropriate for use in both new assembly and field repair work by mechanics, millwrights, pipefitters, and general trade technicians working with 5/16-18 UNC fastener systems.

Key Features

• Distorted-thread locking style provides prevailing torque without adhesives or inserts
• 5/16-18 UNC right-hand thread for compatibility with standard inch-series fasteners
• Grade B steel construction for reliable mechanical strength in general-duty applications
• Zinc-plated and wax-plated finish resists corrosion and reduces installation friction
• Low-profile at 17/64 inches high, fits tight-clearance assemblies
• Sold in a 100-piece package, suitable for stocking or production use

Compatibility

Designed as a standard replacement or stocking fastener for assemblies using 5/16-18 UNC hex lock nuts with a distorted-thread locking style in inch-measurement systems.

Installation Notes

Installation is performed with standard hex tooling sized for a 1/2-inch width across flats. Distorted-thread lock nuts are designed for single-use applications in critical joints; reuse after removal is not recommended as the prevailing torque diminishes after the thread form has been engaged. Always de-energize or depressurize the system before servicing fastened connections in live mechanical or fluid-handling assemblies. Follow applicable industry standards for fastener torque and joint design.