SAE Washer Flat Washer Type SAE Dimensional Standards ASME B18.22.1 Material Steel Material Grade/Class Grade 8 Finish Armor Coat For Screw Size 7/16 in Inside Diameter 0.469 in Outside Diameter 59/64 in Maximum Thickness 0.094 in System of Measurement Inch Minimum Thickness 0.094 in Pack Size Small Pack Resistance Properties Corrosion Resistant Rust Resistant Rockwell Hardness C38 Tensile Strength 150 000 psi Thickness Tolerance +/-0.010 in Package Quantity 25