Beveled Washer, Flat Washer Type Beveled, Material Steel, Material Grade/Class Grade 5, Finish Black Oxide, For Screw Size #10, Inside Diameter 0.203 in, Outside Diameter 1/2 in, Maximum Thickness 0.093 in, System of Measurement Inch, Minimum Thickness 0.093 in, Inside Diameter Tolerance +/-0.010 in, Outside Diameter Tolerance +/-0.010 in, Pack Size Small Pack, Rockwell Hardness C4, Thickness Tolerance +0.005/-0.004 in, Package Quantity 25