Springs made by helically winding spring wire, keeping the coils tight one on top of the other, in order to produce tension. Also known as extension springs.
Coil tension springs are used to be pulled apart when a load or force is applied. Once this force or load is released, the tension on the coil tension spring will make the coils shrink back to their original length. When using our online calculator, Spring Creator, you have the option to pick between four types of hooks; machine hooks, cross-over-center hooks, side hooks, or extended hooks. The option to put no hooks on coil tension spring is also available in case you are trying to experiment with a long length spring or perhaps you will be using a bolt to thread into the inner diameter of the coil tension spring to fasten it.