Wedge Lock Washer Lock Washer Type Wedge Lock Finish Delta Protect Material Steel For Screw Size 7/16 in Inside Diameter 0.45 in Outside Diameter 0.73 in Assembly Thickness 0.1 in Assembly Thickness Tolerance +/-0.01 in Dimensional Standards DIN 25201 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness HRC46 System of Measurement Inch Package Quantity 200