Wedge Lock Washer, Lock Washer Type Wedge Lock, Finish Plain, Material Stainless Steel, For Screw Size M12, Inside Diameter 13 mm, Outside Diameter 25.4 mm, Assembly Thickness 3 mm, Assembly Thickness Tolerance +/-0.25 mm, Dimensional Standards DIN 25201, Material Grade/Class 316, Pack Size Small Pack, Rockwell Hardness HRC52, System of Measurement Metric, Package Quantity 100