Peterson American Corporation, an international group of Peterson Spring Companies, is the largest privately owned spring mak ... er group in North America. Product lines include engine valve springs, compression spring, extension springs, torsion springs, coil springs, transmission rings, retaining rings, snap rings, multiform clips, wire forms, hose clamps, stampings (four-slide & flat wire) and an expanding list of patented/special components. Peterson Spring is a market leader in the automotive OEM, Power train, chassis, appliance, agricultural, lawn & garden machinery, medical equipment, furniture, heavy equipment, marine, & auto sport segments. Peterson Spring is uniquely qualified to focus full-service attention on your project. We bring experience, state-of-the-art design and manufacturing, geographically dispersed facilities, and skilled staff, to each customer and market we serve from automotive to aerospace, agricultural to home appliance. Headquartered in Southfield, MI, Peterson Spring has manufacturing plants and a number of specialty operations located in the United States, Canada, Mexico, and England. read more