Lock Washer, Finish Zinc Plated, Material Steel, For Screw Size 6 mm, Inside Diameter 6.3 mm, Outside Diameter 10.8 mm, Maximum Thickness 1.77 mm, Minimum Thickness 1.77 mm, Color Silver, Material Grade/Class Not Graded, Pack Size Small Pack, Rockwell Hardness C46, Thickness Tolerance +/-0.28 mm, Package Quantity 200