Flat Washer, Flat Washer Type Standard, Dimensional Standards ASME B18.22.1, Material Stainless Steel, Material Grade/Class 316, Finish NL-19, For Screw Size 5/8 in, Inside Diameter 0.688 in, Outside Diameter 1 3/4 in, Maximum Thickness 3/16 in, System of Measurement Inch, Minimum Thickness 9/64 in, Color Silver, Material Quality Standards Not Applicable, Pack Size Small Pack, Resistance Properties Corrosion-Resistant, Rockwell Hardness B70, Thickness Tolerance +0.108 to 0.160 in