U.S. Axle is a leading manufacturer of axle shafts, flanged shafts, splined shafts, precision ground shafts, induction hardened shafts, deep case hardened shafts, torsion bars, cylinders, honed tubes, threaded tubes, precision tubes and induction hardened tubes. The company s large diameter processes and services are focused on manufacturing parts for industries such as agricultural, construction, heavy truck, rail, down hole markets, automotive, government, mining, natural gas, oil and racing. U.S. Axle has been in business for more than 80 years.