Flat Washer Flat Washer Type SAE Dimensional Standards ASME B18.22.1 Material Steel Material Grade/Class Grade 2 Finish Zinc Plated For Screw Size 3/4 in Inside Diameter 0.781 in Outside Diameter 1 1/2 in Maximum Thickness 0.141 in System of Measurement Inch Minimum Thickness 0.141 in Color Silver Inside Diameter Tolerance 0.774-0.751 Made in North America No Manufacturer Location Globally Sourced Material Quality Standards Not Rated Maximum Temperature 350 Degrees C