Split Lock Washer Lock Washer Type Split Lock Finish Blue Phosphate Material Alloy Steel For Screw Size M5 Inside Diameter 5.5 mm Outside Diameter 8.8 mm Maximum Thickness 1.2 mm Minimum Thickness 1.2 mm Color Blue Dimensional Standards DIN 127 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness HRC44 System of Measurement Metric Thickness Tolerance +/-0.1 mm Package Quantity 100