Nowddays the spring has become an important tool in human life. The springs used in different directions. Let’s analyze the spring in a very wide range of applications—the characteristics of locomotive spring.

A number of different terminal devices or "hooks" are used to secure the source of tension for a locomotive spring. Locomotive spring works in the opposite direction to a compression spring. Compression springs act in reverse when pressed, and locomotive springs act in reverse when stretched or pulled. When the ends of the locomotive spring are pulled apart, the spring tries to pull them back together.

Like compression springs, locomotive springs absorb and store energy. But unlike compression springs, most locomotive springs are usually under some degree of tension, even without any load. This initial tension determines how tightly the locomotive spring coils without any load.