Split Lock Washer Finish Zinc Plated Material Steel For Screw Size 1 1/2 in Inside Diameter 1.504 in Outside Diameter 2.627 in Maximum Thickness 0.496 in Minimum Thickness 0.496 in Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness C38 Package Quantity 5