Wilbur and Orville Wright's first flight might never have succeeded without an assist from Amsted Industries' Diamond Chain subsidiary. A maker of bicycle and industrial roller chains, Diamond produced the propeller chain for the Wright brothers' aircraft. Amsted Industries' three different segments manufacture highly engineered industrial components for locomotive and railcar makers, automotive OEMs, and construction and building suppliers. It is a major force in making freight car undercarriages, too. Main subsidiaries (besides Diamond Chain) include Amsted Rail, Burgess Norton, ConMet, Baltimore Aircoil Company, Griffin Pipe Products, Griffin Wheel, and Means Industries.