Flat Washer Flat Washer Type Oversized Dimensional Standards ASME B18.22.1 Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size 1 in Inside Diameter 1.031 in Outside Diameter 2 in Maximum Thickness 0.323 in System of Measurement Inch Minimum Thickness 0.253 in Color Silver Inside Diameter Tolerance +0.030 in -0.007 in Made in North America No Manufacturer Location Globally Sourced Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F