Split Lock Washer Lock Washer Type Split Lock Finish Zinc Plated Material Steel For Screw Size 5/8 in Inside Diameter 0.628 in Outside Diameter 1.073 in Maximum Thickness 0.156 in Minimum Thickness 0.156 in Color Yellow Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Bulk Pack Rockwell Hardness C38 Thickness Tolerance - Package Quantity 2000