This item is the Heater Terminal Nut, part number WP8268548 or WPW10477552, from a JennAir Dishwasher Model JDB8500AWY1, Maytag Dishwasher Model MDEB7609AWW2 or KitchenAid Dishwasher Model KUDS30IXBL4. Some wear and residue from normal use. Fully functional.  It will fit other brands and models where the part number matches.  Listing price includes free shipping is USPS First Class