Flat Washer, Flat Washer Type Standard, Dimensional Standards ANSI B18.22.1, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, For Screw Size 1 in, Inside Diameter 1.063 in, Outside Diameter 2 1/2 in, Maximum Thickness 0.165 in, System of Measurement Inch, Minimum Thickness 0.165 in, Color Silver, Pack Size Small Pack, Rockwell Hardness B80, Thickness Tolerance 0.136-0.192 in, Package Quantity 10