Lock Washer, Lock Washer Type Wedge Lock, Finish Plain, Material Stainless Steel, For Screw Size 6 mm, Inside Diameter 6.66 mm, Outside Diameter 12.6 mm, Maximum Thickness 2.56 mm, Assembly Thickness 2.56 mm, Color Silver, Material Grade/Class Not Graded, Pack Size Small Pack, Resistance Properties Shock , Vibration , Rockwell Hardness HRC25, System of Measurement Metric, Package Quantity 200