Split Lock Washer Lock Washer Type Split Lock Finish Armor Coat Material Steel For Screw Size 7/16 in Inside Diameter 0.45 in Outside Diameter 0.784 in Maximum Thickness 0.109 in Minimum Thickness 0.109 in Color Silver Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness C33 System of Measurement Inch Thickness Tolerance +/-0.006 in Package Quantity 25