Flat Washer, Flat Washer Type Standard, Dimensional Standards ANSI B18.22.1, Material Stainless Steel, Material Grade/Class 18-8, Finish NL-19, For Screw Size 7/16 in, Inside Diameter 0.5 in, Outside Diameter 1 1/8 in, Maximum Thickness 1/16 in, System of Measurement Inch, Minimum Thickness 1/16 in, Color Silver, Material Quality Standards Not Applicable, Pack Size Small Pack, Resistance Properties Corrosion-Resistant, Rockwell Hardness B70, Thickness Tolerance +/-0.005 in, Package Quantity 100