Quality Spring Design, Springs, and Stampings Established in 1928, Mid-West Spring and Stamping, Certified ISO 9001:2015, is dedicated and experienced when it comes to springs, custom springs, and metal stamping. Today Mid-West Spring and Stamping is privileged to be a multi-plant spring manufacturer with a full range of products and services for springs and stampings manufacturers nationwide. We are a leading supplier to hundreds of internationally known original equipment manufacturers (OEM's).