Stainless Steel Fender Washers Fender washers have a larger outside diameter than standard flat washers. These oversized washers are used to spread the weight-bearing load to a greater surface area. Fender washers are also the perfect choice if the through hole for the fastener is larger than the fastener itself, keeping it from pulling through the material it is holding. Product Information Select Desired Washer Size and Quantity from drop down menus. Material : Stainless Steel Grade : 18-8 Product Dimensions Nominal Washer Size Inside Diameter Thickness Maximum #6 0.150" 0.045" #8 0.174" 0.045" #10 0.210" 0.045" #12 0.234" 0.050" 1/4" 0.290" 0.050" 5/16" 0.347" 0.068" 3/8" 0.400" 0.062" 1/2" 0.530" 0.062" Key Notes: Fender washers offer a bolt or screw a wider bearing surface that will disperse the load weight to a greater surface area and ensure that the nut or bolt is pressed up against a smooth surface reducing the chances the fastener loosening over time because of contact with an uneven surface as well as keeping a fastener from pulling through a hole that is larger than the diameter of the head. A fender washer though similar in shape to a standard washer the outside diameter is much larger in proportion to the center hole. Made of stainless steel grade 18-8 which offers a high level of chemical and corrosion resistance and strength that will outperform and outlast all zinc plated fasteners for years without the need to perform costly and time consuming maintenance. The vast majority of stainless steel fasteners are produced with metals from the austenitic family. Their high levels of chromium and nickel provide tough corrosion resistance and the ability to withstand considerable physical strain without fracturing, albeit at a higher cost than the martensitic varieties.. Fastenere Brand Fender Washers made of 18-8 stainless steel will outlast and outperform other washers made of steel or zinc for years to come Shipping: All orders placed before 3:30 pm EST Will Ship Same Day Tracking is provided on ALL Orders Priority Mail Shipping service is offered at a discount of only $3.95 UPS Ground UPS Next Day Air is available, Please inquire for pricing Returns : ALL returns are accepted if returned within 60 days. Money Back or exchange guaranteed. NO Restocking Fees. For YOU, we constantly strive to find ways to improving our performance.