Split Lock Washer Lock Washer Type Split Lock Finish Zinc Yellow Material Steel For Screw Size 1 1/2 in Inside Diameter 1.504 in Outside Diameter 2.419 in Maximum Thickness 0.375 in Minimum Thickness 0.375 in Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness C40 to C50 Package Quantity 5