Value Collection SEIWIS0500USA-100BX Lock Washer 1/2 in

Product Description

The VALUE COLLECTION SEIWIS0500USA-100BX is a dual-function internal and external tooth lock washer designed for use with 1/2-inch fasteners. Manufactured from Grade 2 steel with a zinc-plated finish, this washer provides reliable vibration resistance and corrosion protection in standard mechanical and electrical assemblies. It measures 0.53 inches inside diameter and 1.26 inches outside diameter, with a thickness of 0.055 inches. The combined internal and external tooth profile increases the contact surface area, improving holding power under dynamic load conditions. Electricians, plumbers, HVAC technicians, and general maintenance professionals use this washer in panel assemblies, conduit fittings, equipment mounting, and general fastening applications.

This lock washer is suited for residential and light commercial applications where standard zinc-plated hardware is appropriate. The dual-tooth geometry makes it a common choice in electrical enclosures and mechanical assemblies that require secure fastener retention without heavy-duty or mil-spec hardware. It is sold in a minimum order quantity of 10 units, with individual package quantity of 1.

Key Features

• Internal and external tooth design increases grip area for improved vibration resistance
• Grade 2 steel construction provides dependable strength for standard fastening applications
• Zinc-plated finish offers basic corrosion resistance in indoor and light-duty environments
• 0.53-inch ID fits standard 1/2-inch screws and bolts
• 0.055-inch thickness provides a low-profile fit in tight assemblies

Compatibility

Designed for use with 1/2-inch screws and bolts in standard mechanical and electrical fastening applications requiring an internal and external tooth lock washer.

Installation Notes

Install with the toothed face contacting the workpiece or fastener bearing surface to ensure proper locking action. Power down all electrical equipment before servicing panels or enclosures where this washer will be used. A standard socket or wrench set is sufficient for installation. Do not reuse a lock washer that has been fully compressed, as the teeth will not re-engage effectively.