USS Washer Flat Washer Type USS Dimensional Standards ASME B18.22.1 Material Steel Material Grade/Class Grade 2 Finish Hot Dipped Galvanized For Screw Size 3/4 in Inside Diameter 0.813 in Outside Diameter 2 in Maximum Thickness 0.141 in System of Measurement Inch Minimum Thickness 0.141 in Pack Size Small Pack RoHS Compliant No Package Quantity 225