Fender Washer Flat Washer Type Oversized Dimensional Standards DIN 9021 Material Steel Material Grade/Class Grade 2 Finish Zinc Plated For Screw Size M20 Inside Diameter 22 mm Outside Diameter 60 mm Maximum Thickness 4 mm System of Measurement Metric Minimum Thickness 4 mm Color Silver Inside Diameter Tolerance 0.866-0.887 Made in North America No Manufacturer Location Globally Sourced Material Quality Standards Not Rated Maximum Temperature 350 Degrees C