A hairpin clip, also known as a retaining pin,[1] is a type of formed wire used on a grooved shaft. It is designed to be easily installed and uninstalled, and is reusable. They are commonly made from 1050 carbon steel and 300 series stainless steel.[2]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Hairpin_clip.png/220px-Hairpin_clip.png)
References
edit- ^ Pins, retrieved 2009-08-19.
- ^ Hairpin clips, archived from the original on 2004-08-07, retrieved 2009-08-19.