Value Collection C99569 Fender Flat Washer 5/16 in Steel

Product Description

The VALUE COLLECTION C99569 is a zinc-plated steel fender flat washer sized for 5/16 inch screws. Fender washers feature a larger-than-standard outside diameter, spreading clamp load over a wider surface area to reduce pull-through on softer materials or oversized holes. This washer measures 11/32 inch inside diameter, 1-5/8 inch outside diameter, and 0.0469 inches thick. The zinc plating provides a baseline layer of corrosion resistance suitable for general indoor and light-duty outdoor fastening applications. It is used by electricians, plumbers, HVAC technicians, and general tradespeople wherever a wide-bearing surface is needed at a 5/16 inch fastener point.

This washer is appropriate for residential and light commercial construction, electrical panel work, mechanical equipment mounting, conduit support, and general sheet metal or structural fastening tasks. The oversized OD makes it particularly useful when fastening through thin sheet metal, wood, rubber grommets, or any substrate where a standard flat washer would have insufficient bearing surface. The inch-system dimensions conform to common domestic fastener standards.

Key Features

• Fender-style oversized outside diameter (1-5/8 inches) distributes load and reduces pull-through
• Fits 5/16 inch screws or bolts with an 11/32 inch inside diameter
• Steel construction with zinc plating for general-purpose corrosion resistance
• Thin profile at 0.0469 inches keeps stack height low in tight assemblies
• Inch-system sizing compatible with standard domestic fastener sets

Compatibility

Designed as a standard-dimension fender flat washer for use with 5/16 inch fasteners in general trade and mechanical applications.

Installation Notes

Installation requires no special tools beyond the fastener driver appropriate for the mating screw or bolt. De-energize any electrical circuits and shut off fluid systems before accessing fastener points in live panels or piping. Do not exceed the torque rating of the mating fastener, as over-torquing can deform the thin washer profile. For outdoor or high-moisture environments, consider a higher-grade corrosion-resistant finish in place of standard zinc plating.