What is the purpose of dead coils in the middle of a compression spring? - Engineering Stack Exchange
By A Mystery Man Writer
![](https://i.stack.imgur.com/v64W0.jpg)
What purpose do dead coils in the middle of a spring serve? For example, this spring from a ballpoint pen has two dead coils at each end and two in the center of the spring. Why add dead coils in the
![](https://i.stack.imgur.com/v64W0.jpg)
What is the purpose of dead coils in the middle of a compression spring? - Engineering Stack Exchange
![](https://i.stack.imgur.com/JY2YB.jpg)
What is the purpose of dead coils in the middle of a compression spring? - Engineering Stack Exchange