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