Flat Washer Flat Washer Type SAE Dimensional Standards ASME B18.21.1 SAE Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size 9/16 in Inside Diameter 0.594 in Outside Diameter 1 5/32 in Maximum Thickness 0.121 in System of Measurement Inch Minimum Thickness 0.047 in Color Silver Inside Diameter Tolerance +0.015 in -0.005 in Made in North America No Manufacturer Location Globally Sourced Maximum Temperature 302 Degrees F