Ball plunger screws are a type of fastener commonly used in machine assembly and production. They consist of a threaded screw with a spring-loaded ball plunger at the end. The ball plunger is designed to retract when pressure is applied, allowing the screw to be easily inserted into a hole or recess. Once the screw is in place, the ball plunger extends again, creating a secure and stable hold. Ball plunger screws are available in a range of sizes and materials, including steel, stainless steel, and brass, to suit different applications and environments. They are often used to hold parts in place during assembly, to create adjustable stops or indexing positions, or as detents or latches. Ball plunger screws offer high precision and repeatability, and are easy to install and remove using basic tools