Used on f18c night attack established for fa18c; f/a18c aircraft; f18d night attack established for fa18d; f/a18d aircraft. washer-flat, metal, special inside diameter-0.203"; outside diameter-0.438"; thickness-0.020"
Used on mk45 mod 4 misc parts. 1.188" hole diameter spacer surface treatment is drying type preservative oil; material is carbon steel oil surface treated