Wedge Lock Washer Lock Washer Type Wedge Lock Finish Plain Material Stainless Steel For Screw Size 1 1/4 in Inside Diameter 1.35 in Outside Diameter 1.91 in Assembly Thickness 0.22 in Assembly Thickness Tolerance +/-0.02 in Color Silver Dimensional Standards DIN 25201 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness HRC52 System of Measurement Metric