Split Lock Washer, Lock Washer Type Split Lock, Finish Plain, Material Stainless Steel, For Screw Size M3, Inside Diameter 3.1 mm, Outside Diameter 5.6 mm, Maximum Thickness 1 mm, Minimum Thickness 1 mm, Dimensional Standards DIN 7980, Material Grade/Class 18-8, Pack Size Small Pack, Rockwell Hardness C40, Package Quantity 50