Fender Washer Flat Washer Type Oversized Dimensional Standards UL Standard Material Stainless Steel Material Grade/Class 316 Finish Plain For Screw Size 1/4 in Inside Diameter 0.25 in Outside Diameter 1 1/4 in Maximum Thickness 0.05 in System of Measurement Inch Minimum Thickness 0.05 in Color Silver Material Quality Standards ASTM Pack Size Small Pack Resistance Properties Corrosion Resistant