Split Lock Washer Lock Washer Type Split Lock Finish Galvanized Material Steel For Screw Size 1 1/4 in Inside Diameter 1.254 in Outside Diameter 2.036 in Maximum Thickness 0.312 in Minimum Thickness 0.312 in Color Silver Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness C38 System of Measurement Inch Thickness Tolerance +/-0.020 in Package Quantity 10