Split Lock Washer Lock Washer Type Split Lock Finish Zinc Plated Material Steel For Screw Size 3/4 in Inside Diameter 0.753 in Outside Diameter 1.265 in Maximum Thickness 0.188 in Minimum Thickness 0.188 in Color Clear Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Bulk Pack Rockwell Hardness C38 Thickness Tolerance - Package Quantity 1250