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 Resistant Vibration Resistant Rockwell Hardness HRC25 System of Measurement Metric Package Quantity 200