Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Stainless Steel For Screw Size M3 Inside Diameter 3.1 mm Outside Diameter 6.2 mm Maximum Thickness 0.8 mm Minimum Thickness 0.8 mm Dimensional Standards DIN 127 B Material Grade/Class 18-8 Pack Size Small Pack Rockwell Hardness C46 Package Quantity 50