Sterling Spring is a custom spring manufacturer with plants in Chicago, Illinois and Jackson, Michigan. Our spring manufacturing capabilities include torsion springs, compression springs, extension springs, stampings, wire forms, four slides, assemblies and more. We are experts in custom spring manufacturing from prototyping to large production runs. Our customer service is unmatched within the spring manufacturing industry. Each of our customers works one-on-one with their account manager to turn ideas and concepts into quality manufactured springs. From a small custom spring run to a million-plus spring order, our reputation is one of quality products, outstanding service and efficiency. That's been the Sterling approach since 1953. Sudden custom project come up with a deadline of yesterday? Not a problem with our unique just-in-time delivery abilities. We'll get the job done and it'll be done yesterday just as you needed. Our just-in-time delivery capability puts our 50,000 square foot plants to work for your custom spring, wire form and metal stamping project. We can manage your custom manufactured spring production from prototyping to our expert secondary department, by duplicating your product samples or redesigning them.