Brighton Best's 5/16 in. x 1-1/4 in. x 0.05 in. 304 Stainless Steel Fender Flat Washer (SKU: 392120) is suited to applications where a large bearing surface and stainless steel corrosion resistance are important considerations. The fender-style profile is particularly useful for fastening sheet material, thin panels, wood, plastic, fiberglass, and other surfaces where a conventional washer may not provide enough coverage. Its 304 stainless steel construction offers resistance to oxidation and corrosion in many general-purpose environments, while the flat design provides consistent contact beneath a compatible nut or bolt head. Contractors, fabricators, maintenance professionals, and DIY users can use this washer to improve load distribution and create more stable threaded fastening assemblies without adding unnecessary thickness to the connection.