Value Collection -31369-1/4 Internal Tooth Lock Washer 100pk

Product Description

The VALUE COLLECTION -31369-1/4 is a zinc-plated, Grade 2 steel internal tooth lock washer sized for 1/4 inch screws. Internal tooth lock washers grip the mating surface through hardened serrated teeth that bite into both the fastener head and the substrate, resisting loosening from vibration and torque. The zinc plating provides a basic level of corrosion resistance suitable for general indoor and light-duty applications. With a thickness of 0.035 inches and a minimum inside diameter of 0.256 inches, this washer is dimensionally consistent for use in standard assembly and maintenance work. Sold in a package of 100 pieces, it suits technicians and tradespeople who need a reliable supply on hand for recurring fastener tasks.

This washer is appropriate for light-gauge assemblies where screw retention is required in vibration-prone environments. Typical applications include panel mounting, equipment enclosures, junction boxes, and general mechanical assembly across HVAC, electrical, and plumbing trade work. The internal tooth design keeps the washer centered on the fastener during installation, which makes it a practical choice in tight clearances where an external tooth washer would not fit. The Grade 2 steel construction meets the requirements of general-purpose fastener applications that do not call for high-strength or military-specification hardware.

Key Features

• Internal tooth design centers washer on fastener and grips mating surfaces to resist loosening
• Grade 2 steel construction suitable for general-purpose mechanical assembly
• Zinc-plated finish provides basic corrosion resistance for indoor and light-duty use
• Thickness of 0.035 inches with inside diameter range of 0.256 to 0.267 inches for consistent fit on 1/4 inch fasteners
• Outside diameter range of 0.68 to 0.695 inches
• Packaged in quantities of 100 for shop stock and service van inventory

Compatibility

Designed as a standard internal tooth lock washer for use with 1/4 inch screws and bolts in general mechanical, electrical, and HVAC assembly applications.

Installation Notes

Install with the teeth facing the fastener head or the workpiece surface to achieve proper gripping action. Electricians, HVAC technicians, and plumbers routinely install lock washers as part of panel, bracket, and equipment fastening under NEC and IFGC guidelines. Ensure the mating surfaces are clean and free of debris before assembly. Do not reuse a compressed lock washer, as the teeth lose gripping effectiveness once fully flattened.