Value Collection 31342 No.10 External Tooth Lock Washer 100pk

Product Description

The VALUE COLLECTION 31342 is a No. 10 external tooth lock washer designed to resist loosening caused by vibration and torque in bolted assemblies. Made from Grade 2 steel with a zinc-plated finish, this washer bites into the mating surface as the fastener is tightened, maintaining clamp load under dynamic loads. The external tooth design provides maximum locking surface contact compared to internal tooth styles. Each package contains 100 washers. These washers are installed by electricians, plumbers, HVAC technicians, and general mechanical trades wherever a No. 10 screw requires positive retention against backing out.

This washer is suited for light to medium-duty fastening applications in residential and commercial mechanical assemblies, electrical panel and enclosure work, HVAC equipment fastening, and general industrial hardware applications. The zinc plating provides baseline corrosion resistance for indoor and sheltered environments. At 0.022 inches thick with an inside diameter ranging from 0.195 to 0.204 inches and an outside diameter ranging from 0.395 to 0.406 inches, these washers are dimensioned to fit standard No. 10 machine screws and sheet metal screws.

Key Features

• External tooth design bites into workpiece to resist vibration-induced loosening
• Grade 2 steel construction for reliable clamp load in general fastening applications
• Zinc-plated finish for corrosion resistance in sheltered environments
• 0.022 inch thickness suits standard No. 10 hardware clearances
• Inside diameter range of 0.195 to 0.204 inches fits No. 10 screw shanks
• Sold in a 100-piece package for job-site and shop stocking

Compatibility

Designed as an OEM-style and general-use replacement lock washer for No. 10 machine screws and sheet metal screws in standard bolted assemblies.

Installation Notes

Install between the fastener head or nut and the mating surface with the teeth facing the workpiece. Power down or de-energize any equipment before servicing fastened assemblies in electrical or HVAC applications. Do not reuse lock washers that have been fully compressed, as the teeth lose locking effectiveness after a single torque cycle.