Flat Washer Flat Washer Type Standard Dimensional Standards DIN 125A Material Stainless Steel Material Grade/Class 18-8 Finish NL-19 For Screw Size M10 Inside Diameter 10.5 mm Outside Diameter 20 mm Maximum Thickness 2 mm System of Measurement Metric Minimum Thickness 2 mm Color Silver Pack Size Small Pack Resistance Properties Corrosion Resistant Thickness Tolerance +/-0.20mm Package Quantity 100