Lock Washer Lock Washer Type Wedge Lock Finish Plain Material Stainless Steel For Screw Size 8 mm Inside Diameter 8.28 mm Outside Diameter 16 mm Maximum Thickness 3.02 mm Assembly Thickness 3.02 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