Split Lock Washer Lock Washer Type Split Lock Finish Hot Dipped Galvanized Material Steel For Screw Size 7/16 in Inside Diameter 0.44 in Outside Diameter 0.77 in Maximum Thickness 0.109 in Minimum Thickness 0.109 in Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness C38 Package Quantity 25