Split Lock Washer Lock Washer Type Split Lock Finish Zinc Plated Material Alloy Steel For Screw Size 5/8 in Inside Diameter 0.641 in Outside Diameter 1.073 in Maximum Thickness 0.016 in Minimum Thickness 0.016 in Color Yellow Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Bulk Pack Rockwell Hardness C38 System of Measurement Inch Thickness Tolerance 0.000/+0.010 in Package Quantity 2000