Value Collection 31344 External Tooth Lock Washer 100-pack

Product Description

The VALUE COLLECTION 31344 is a zinc-plated, Grade 2 steel external tooth lock washer sized for 1/4 inch screws. External tooth lock washers bite into the mating surface and fastener head when torqued, resisting loosening from vibration and dynamic loads. This washer measures between 0.256 and 0.267 inches inside diameter and 0.494 to 0.506 inches outside diameter, with a thickness of 0.025 inches. The zinc plating provides a basic level of corrosion resistance for general-purpose indoor and light-duty applications. Sold in a pack of 100, this washer is a standard consumable stocked by electricians, HVAC techs, plumbers, and general mechanical contractors.

External tooth lock washers in this size are used wherever a 1/4 inch fastener must resist vibration-induced loosening. Common applications include electrical panel and junction box assembly, HVAC unit sheet metal fastening, plumbing bracket mounting, and general equipment assembly. The Grade 2 designation suits standard load requirements in non-structural, non-critical fastening applications. The 100-piece pack quantity is appropriate for bench stock, service van inventory, or small project runs.

Key Features

• External tooth design bites into mating surface to resist fastener back-out under vibration
• Grade 2 steel construction for standard-duty general-purpose use
• Zinc-plated finish for basic corrosion resistance
• Fits 1/4 inch screw with inside diameter range of 0.256 to 0.267 inches
• Thickness of 0.025 inches for consistent seating
• Pack of 100 for bench stock or field inventory replenishment

Compatibility

Designed for use with 1/4 inch screws and bolts in general mechanical, electrical, HVAC, and plumbing fastening applications where an external tooth lock washer is specified.

Installation Notes

Install with the teeth facing the fastener head or the surface being secured, not between two flat clamped surfaces. Power down or de-energize any electrical assembly before installing hardware in live panels or enclosures. Follow applicable NEC or equipment manufacturer guidelines when used in electrical applications. Do not reuse lock washers that have been fully compressed or deformed, as tooth engagement will be reduced.