Helical cocking springs; unlike release and return springs, can be loaded with torsional stress. The ends of the windings are extended tangentially. This was done to create momentum arm. These arms can be in various forms according to the place where they are applied. The windings are wrapped close together.

But there is no preliminary force. Although most springs are wrapped around, the distance between the windings can also be set to reduce friction. These springs are used to apply a torque or store energy. In order to provide convenient installation and working possibilities, various types of arc spring are produced