Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Stainless Steel For Screw Size 1/4 in Inside Diameter 0.26 in Outside Diameter 0.363 in Maximum Thickness 0.078 in Minimum Thickness 0.078 in Dimensional Standards ASME B18.21.1 Material Grade/Class 18-8 Pack Size Small Pack Rockwell Hardness C35 System of Measurement Inch Package Quantity 100