Value Collection R52001237 External Tooth Lock Washer

Product Description

The VALUE COLLECTION R52001237 is an external tooth lock washer designed for use with 1/2 inch screws and fastener assemblies requiring vibration resistance and secure clamping. Manufactured from Grade 2 spring steel with a zinc-plated finish, this washer features serrated external teeth that bite into both the fastener bearing surface and the mating material to resist loosening under dynamic loads. The inside diameter measures 0.53 inches and the outside diameter measures 0.9 inches, with a thickness of 0.045 inches. Hardness is rated at 40 to 50 HRC, providing reliable spring tension across a wide range of industrial and mechanical applications. Installation is performed by maintenance technicians, electricians, plumbers, and general mechanical trades.

This external tooth lock washer is suited for residential, commercial, and light industrial fastening applications where vibration or torque-induced loosening is a concern. It is commonly used in electrical enclosures, mechanical assemblies, HVAC equipment panels, and structural fastening where a 1/2 inch fastener is specified. The zinc-plated finish provides basic corrosion resistance appropriate for indoor and protected outdoor environments. This part does not meet military specifications.

Key Features

• External tooth design bites into mating surfaces to resist vibration-induced loosening
• Grade 2 spring steel construction rated at 40 to 50 HRC hardness
• Zinc-plated finish for corrosion protection in standard service environments
• Inside diameter of 0.53 inches fits standard 1/2 inch screws and bolts
• Thickness of 0.045 inches provides consistent spring tension without excessive stack height

Compatibility

Designed as a standard external tooth lock washer for use with 1/2 inch screws and bolts in general mechanical, electrical, and HVAC panel fastening applications.

Installation Notes

Install with the teeth facing the fastener head or nut bearing surface, not toward the mating workpiece, unless application requirements specify otherwise. Ensure the mating surface is clean and free of coatings that would prevent tooth engagement. Do not reuse lock washers that have been fully compressed or deformed. Follow applicable torque specifications from the fastener manufacturer or governing codes for the assembly type.