Profile: Ballard Brass & Aluminum, Inc. specializes in all types of aluminum castings, brass-bronze castings and gray iron alloys. Our products include manganese bronzes, yellow brasses, copper nickel, propeller nuts, zinc nuts and boat struts. Our zinc nuts are designed to fit snugly against the points of standard propeller nuts. Our boats struts are the ideal solution to resist the corrosive properties of the electrolysis process.