Flat Washer Flat Washer Type Standard Dimensional Standards ASME B18.22.1 Material Stainless Steel Material Grade/Class 316 Finish Plain For Screw Size #10 Inside Diameter 0.188 in Outside Diameter 7/16 in Maximum Thickness 0.039 in System of Measurement Inch Minimum Thickness 0.024 in Color Silver Inside Diameter Tolerance +0.008 in -0.005 in Made in North America No Manufacturer Location Globally Sourced Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F