Flat Washer, Flat Washer Type SAE, Dimensional Standards ASME B18.22.1, Material Stainless Steel, Material Grade/Class 316, Finish Plain, For Screw Size #4, Inside Diameter 0.125 in, Outside Diameter 5/16 in, Maximum Thickness 0.04 in, System of Measurement Inch, Minimum Thickness 0.024 in, Inside Diameter Tolerance +/-0.010 in, Material Quality Standards ASTM A276, Outside Diameter Tolerance +/-0.010 in, Pack Size Small Pack