Flat Washer, Flat Washer Type Standard, Dimensional Standards ASME B18.22.1, Material Steel, Material Grade/Class Grade 2, Finish Chrome Plated, For Screw Size 5/16 in, Inside Diameter 0.344 in, Outside Diameter 11/64 in, Maximum Thickness 0.063 in, System of Measurement Inch, Minimum Thickness 0.063 in, Color Chrome, Pack Size Small Pack, Thickness Tolerance +/-0.015 in, Package Quantity 50