Split Lock Washer Finish Zinc Plated Material Steel For Screw Size #6 Inside Diameter 0.141 in Outside Diameter 0.236 in Maximum Thickness 0.025 in Minimum Thickness 0.025 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 +0.006 in Package Quantity 100