Imperial Spring produces extension springs in a variety of configurations and styles with wire diameters of .008” to .437”. The relative position of the spring ends is electronically controlled. Many types are done automatically. The extension springs are used for resistance and are usually wound very closely. They are used to provide a return of force to parts in an extended position. You must have a way of attaching extension springs to the solid pulling force. Imperial Spring manufactures solid and dependable extension springs and other products at competitive prices, delivers on time, and offers a high level of cost effective expertise. Imperial Spring serves many manufacturers including the makers of lawn and garden items, pool items, locks, sporting goods, circuit breakers, electronics, electronics, furniture, lighting, and much more. Imperial has been providing superior quality products for five decades. This is due to our precision engineering, professional staff and hands on services that maintain our industry leadership. We also offer services that fall into the general categories of plating, color coding, special inspection and laboratory analysis.