Bonded Sealing Washer, Sealing Washer Type Metal Bonded Washer, Finish Zinc-Plated, Metal Material Steel, Material Grade/Class Not Applicable, For Screw Size 5/16 in, Inside Diameter 0.319 in, Outside Diameter 11/16 in, Maximum Thickness 3/32 in, Seal Material Buna-N, System of Measurement Inch, Pack Size Small Pack, Minimum Thickness 3/32 in, Seal Material Color Black, Package Quantity 5