Flat Washer Flat Washer Type Standard Dimensional Standards DIN 125 Material Titanium Material Grade/Class Grade 2 Finish Plain For Screw Size M12 Inside Diameter 13 mm Outside Diameter 24 mm Maximum Thickness 2.7 mm System of Measurement Metric Minimum Thickness 2.3 mm Color Silver Inside Diameter Tolerance +/-0.010 in Material Quality Standards ASTM B348 GR 2 Outside Diameter Tolerance +/-0.010 in Pack Size Small Pack