Fender Washer Flat Washer Type Oversized Dimensional Standards ASME B18.21.1 Material Stainless Steel Material Grade/Class 316 Finish Plain For Screw Size 5/16 in Inside Diameter 0.348 in Outside Diameter 2 in Maximum Thickness 0.08 in System of Measurement Inch Minimum Thickness 0.047 in Color Silver Inside Diameter Tolerance +/- 0.010 in Made in North America No Manufacturer Location Globally Sourced Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F