Wedge Lock Washer, Lock Washer Type Wedge Lock, Finish Delta Protect, Material Steel, For Screw Size M120, Inside Diameter 123.4 mm, Outside Diameter 170 mm, Assembly Thickness 9.5 mm, Assembly Thickness Tolerance +/-0.76 mm, Dimensional Standards DIN 25201, Material Grade/Class Not Graded, Pack Size Small Pack, Rockwell Hardness HRC46, System of Measurement Metric