Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Stainless Steel For Screw Size M10 Inside Diameter 10.2 mm Outside Diameter 16 mm Maximum Thickness 2.5 mm Minimum Thickness 2.5 mm Dimensional Standards DIN 7980 Material Grade/Class 18-8 Pack Size Small Pack Rockwell Hardness C40 Package Quantity 50