Wedge Lock Washer Lock Washer Type Wedge Lock Finish Plain Material Stainless Steel For Screw Size #10 Inside Diameter 0.21 in Outside Diameter 0.43 in Assembly Thickness 0.09 in Assembly Thickness Tolerance +/-0.01 in Color Silver Dimensional Standards DIN 25201 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness HRC52 System of Measurement Metric Package Quantity 10