A spring plunger is a budget-friendly spring-loaded device used to index and fix different manufacturing and construction components into a particular position, just like ball plungers. Ball plungers can be made from stainless steel, steel, brass, or nylon, and you might notice some other exterior coating for extra protection.

When you think of a spring plunger, the first thing that should come to mind is this tool uses a “spring force” to keep the ball or nose in place and fix the workpieces at all times. This end force is so powerful that the ball remains in the same position no matter what it encounters. You can also use spring plungers as support or cushion between two objects, fixturing them in place.

Compared to regular, non-loaded springs, spring plungers are typically easier to install. Their sizes range from 7/20 inches to 1¾ inch, and you can fix them using different methods like the hex socket, the slotted driveway, and a high slot for blind holes. Spring plungers also give you more control over your workpieces and allow you to get through work faster.