Flat Washer Flat Washer Type Standard Dimensional Standards DIN 125-1A Material Steel Material Grade/Class Grade 2 Finish Zinc Plated For Screw Size M60 Inside Diameter 62 mm Outside Diameter 110 mm Maximum Thickness 9 mm System of Measurement Metric Minimum Thickness 9 mm Color Silver Inside Diameter Tolerance 2.441-2.47 Made in North America No Manufacturer Location Globally Sourced Material Quality Standards Not Rated Maximum Temperature 350 Degrees C