Value Collection 446060PS Hex Lock Nut 1/2-20 Grade L9

Product Description

The VALUE COLLECTION 446060PS is a distorted-thread hex lock nut designed to maintain clamp load in high-vibration fastener assemblies. Manufactured from Grade L9 steel with a cadmium dichromate finish, this nut provides corrosion resistance alongside the elevated proof load associated with the L9 material grade. The 1/2-20 UNF thread size covers a wide range of fine-thread applications. At 0.516 inches in height with a 0.75-inch width across flats, the nut seats securely with a standard 3/4-inch wrench. Distorted-thread locking eliminates the need for secondary locking hardware such as split washers or thread adhesive. Suitable for use by mechanical assemblers, maintenance technicians, and trade professionals working with fine-thread fastener systems.

This hex lock nut is intended for use in high-vibration mechanical assemblies where thread loosening under load is a concern. The distorted-thread locking style works by creating an interference fit between the nut threads and the bolt or stud threads, resisting rotation without chemical agents or additional components. Typical applications include industrial equipment, automotive, and structural assemblies requiring UNF fine-thread fasteners with a reliable, reusable locking mechanism. The right-hand thread direction is standard for the vast majority of fastener applications.

Key Features

• Distorted-thread locking style resists vibration-induced loosening without adhesives or secondary hardware
• Grade L9 steel construction provides high proof load capacity
• Cadmium dichromate finish delivers corrosion resistance in demanding environments
• 1/2-20 UNF right-hand thread — compatible with standard fine-thread bolts and studs
• 0.75-inch width across flats accepts a standard 3/4-inch wrench or socket
• Inch measurement system; does not meet military specifications

Compatibility

Designed as a standard replacement or service hex lock nut for 1/2-20 UNF fine-thread fastener applications across mechanical, industrial, and structural assemblies.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician familiar with fastener torque practices. Ensure the mating bolt or stud threads are clean and free of damage before installation. Distorted-thread lock nuts are designed for reuse but should be inspected after removal — replace if the locking interference feels reduced. Always follow applicable torque specifications from the equipment manufacturer or relevant industry standards for the specific assembly.