Wedge Lock Washer Lock Washer Type Wedge Lock Finish Plain Material Stainless Steel For Screw Size 3/8 in Inside Diameter 0.41 in Outside Diameter 0.83 in Assembly Thickness 0.08 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 Inch Package Quantity 6