Fender Washer Flat Washer Type Oversized Dimensional Standards ASME B18.21.1 Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size 1/4 in Inside Diameter 0.281 in Outside Diameter 1 49/64 in Maximum Thickness 0.065 in System of Measurement Inch Minimum Thickness 0.065 in Color Silver Inside Diameter Tolerance .285 +.010-.010 IN Made in North America No Manufacturer Location Made in USA Material Quality Standards ASTM A280