Value Collection R52000967 Lock Washer No. 10 Spring Steel

Product Description

The VALUE COLLECTION R52000967 is a No. 10 screw external tooth lock washer designed to resist fastener loosening caused by vibration and dynamic loads. Stamped from Grade 2 spring steel and finished with zinc plating for corrosion resistance, this washer seats between a fastener head or nut and the mating surface. The external tooth profile bites into both surfaces as the fastener is torqued, creating a mechanical lock. With a 0.204 inch inside diameter, 0.41 inch outside diameter, and 0.025 inch thickness, it is sized for standard No. 10 screw applications across a wide range of assemblies.

This external tooth lock washer is used in residential and commercial mechanical, electrical, and HVAC assemblies where vibration or thermal cycling could back off threaded fasteners. Common applications include panel enclosure hardware, equipment mounting, motor terminal connections, and general sheet metal fastening. It is installed by electricians, HVAC technicians, and mechanical contractors as a standard component in control panel builds, equipment frames, and access covers.

Key Features

• External tooth profile provides positive locking action by biting into fastener and workpiece surfaces
• Grade 2 spring steel construction delivers hardness of 40-50 HRC for reliable spring-back and grip
• Zinc-plated finish provides base-level corrosion resistance for indoor and protected environments
• 0.204 inch inside diameter fits standard No. 10 screws without modification
• 0.025 inch thickness maintains a low profile within fastened assemblies

Compatibility

Designed as a standard external tooth lock washer for use with No. 10 screws across general mechanical, electrical, and HVAC assembly applications.

Installation Notes

Install with the toothed face contacting the workpiece surface or underside of the fastener head, not between two flat washers where the teeth cannot engage. Ensure mating surfaces are free of paint, heavy oxidation, or debris that would prevent tooth penetration. Torque the fastener to the assembly specification for the screw size and material. Do not reuse lock washers that have been fully compressed or show flattened teeth.