Wedge Lock Washer Lock Washer Type Wedge Lock Finish Plain Material Stainless Steel For Screw Size M72 Inside Diameter 75.1 mm Outside Diameter 105 mm Assembly Thickness 9 mm Assembly Thickness Tolerance +/-0.76 mm Dimensional Standards DIN 25201 Material Grade/Class 316 Pack Size Small Pack Rockwell Hardness HRC52 System of Measurement Metric