Split Lock Washer Finish Zinc Plated Material Steel For Screw Size 1 1/4 in Inside Diameter 1.254 in Outside Diameter 2.104 in Maximum Thickness 0.384 in Minimum Thickness 0.384 in Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness C38 Package Quantity 5