Large O.D. Oversized Washer, Flat Washer Type Oversized, Dimensional Standards ASME B18.21.1, Material Stainless Steel, Material Grade/Class 316, Finish Plain, For Screw Size 1/2 in, Inside Diameter 0.535 in, Outside Diameter 3 in, Maximum Thickness 5/64 in, System of Measurement Inch, Minimum Thickness 3/64 in, Color Silver, Inside Diameter Tolerance +/- 0.010 in, Made in North America Not Made in North America, Manufacturer Location Globally Sourced, Material Quality Standards Not Applicable