Value Collection KEPI0500-100BX K-lock Hex Nut 1/2-13

Product Description

The VALUE COLLECTION KEPI0500-100BX is a 1/2-13 UNC K-Lock hex nut with an integrated external tooth lock washer, manufactured from steel with a zinc plated finish. This one-piece fastener combines a standard hex nut and a serrated lock washer into a single unit, eliminating the need for a separate washer during assembly. The external teeth bite into the mating surface under torque, resisting loosening caused by vibration. Sold in a box of 100, this part is suited for high-volume mechanical, electrical, and structural assembly work where consistent vibration resistance is required.

K-Lock nuts with external tooth lock washers are widely used in electrical enclosures, control panels, equipment frames, and general mechanical assemblies. The 1/2-13 UNC thread size is one of the most common inch-series fastener standards, making this nut a practical stocking item for maintenance shops, assembly lines, and trade contractors. The zinc plating provides moderate corrosion resistance suitable for indoor and light-duty outdoor applications. Machinists, electricians, and general contractors are the typical installers.

Key Features

• Integrated external tooth lock washer eliminates a separate assembly step
• 1/2-13 UNC thread standard for broad compatibility with inch-series fastener hardware
• Zinc plated steel construction for moderate corrosion resistance
• 7/8 inch washer diameter provides adequate bearing surface for the lock teeth
• 3/4 inch width across flats fits standard 3/4-inch open-end or combination wrenches
• Box quantity of 100 supports production and high-volume maintenance use

Compatibility

Designed as a direct replacement or standard stocking fastener for any 1/2-13 UNC threaded application requiring an integrated external tooth lock washer.

Installation Notes

Install using a standard 3/4-inch open-end, box-end, or socket wrench. Ensure the mating surface is clean and free of debris so the external teeth can seat properly and provide effective locking. Follow applicable fastener torque guidelines from the relevant equipment manufacturer or industry standard for 1/2-13 UNC hardware. Do not reuse K-Lock nuts after removal, as the lock teeth deform on initial tightening and will not provide reliable locking in subsequent installations.