Fender Washer Flat Washer Type Oversized Dimensional Standards DIN 9021 Material Stainless Steel Material Grade/Class 18-8 Finish NL-19 For Screw Size M12 Inside Diameter 13 mm Outside Diameter 37 mm Maximum Thickness 3 mm System of Measurement Metric Minimum Thickness 3 mm Color Silver Pack Size Small Pack Resistance Properties Corrosion Resistant Thickness Tolerance +/-0.30mm Package Quantity 10