A lead screw is a type of mechanical component used to convert rotational motion into linear motion. It consists of a threaded shaft and a nut that moves along the threads when the screw is turned. Lead screws are commonly found in various applications, such as 3D printers, CNC machines, and linear actuators, where precise movement is required. The design of a lead screw allows for smooth and controlled motion, making it ideal for tasks that need accuracy. They can be made from different materials, including metal and plastic, and come in various sizes to suit specific needs in engineering and manufacturing.