Value Collection 31352 No. 10 Internal Tooth Lock Washer 100pk

Product Description

The VALUE COLLECTION 31352 is a No. 10 screw-size internal tooth lock washer made from Grade 2 steel with a zinc-plated finish. Internal tooth lock washers provide resistance to loosening under vibration by biting into both the fastener bearing surface and the mating material. The zinc plating provides basic corrosion resistance for general indoor and sheltered applications. At 0.022 inches thick, this washer fits standard No. 10 fastener assemblies and is suitable for use by electricians, HVAC technicians, plumbers, and general mechanical contractors wherever secure fastening is required.

This washer is used in light- to medium-duty fastener assemblies involving No. 10 screws. Common applications include electrical panel assembly, equipment mounting, HVAC component fastening, and general sheet metal work. The internal tooth design keeps the washer centered on the fastener during installation, which reduces shifting during torquing. This package contains 100 washers, making it suitable for stocking a service van or shop bin.

Key Features

• Internal tooth design bites into fastener and workpiece surfaces to resist loosening under vibration
• Grade 2 steel construction provides adequate strength for general-duty fastener assemblies
• Zinc-plated finish offers basic corrosion resistance for indoor and sheltered environments
• Sized for No. 10 screws with an inside diameter range of 0.195 to 0.204 inches
• Outside diameter range of 0.370 to 0.381 inches suits standard No. 10 hardware clearances
• Sold in a 100-piece pack for shop stocking or bulk service use

Compatibility

Designed for use with No. 10 screw fastener assemblies where an internal tooth lock washer is specified. Fits standard No. 10 hardware with an inside diameter between 0.195 and 0.204 inches.

Installation Notes

Install between the fastener head or nut and the workpiece surface, with the teeth facing the bearing surface of the fastener. Ensure the mating surface is free of heavy coatings or debris that would prevent the teeth from seating properly. Do not reuse lock washers after removal, as the teeth lose their locking effectiveness once deformed. Installed per applicable mechanical or electrical assembly standards as required by the governing trade code.