Flat Washer Flat Washer Type Standard Dimensional Standards DIN 125-1A Material Steel Material Grade/Class Grade 2 Finish Zinc Plated For Screw Size M24 Inside Diameter 25 mm Outside Diameter 44 mm Maximum Thickness 4 mm System of Measurement Metric Minimum Thickness 4 mm Color Silver Inside Diameter Tolerance 0.984-0.997 Made in North America No Manufacturer Location Globally Sourced Material Quality Standards Not Rated Maximum Temperature 350 Degrees C