A slotted screw is a type of fastener characterized by a single horizontal groove or slot on its head. This design allows for the use of a flat-head screwdriver to drive the screw into or out of materials. Slotted screws are commonly used in various applications, including woodworking and electronics, due to their simplicity and ease of use. The slotted screw is one of the oldest types of screws, dating back to the 15th century. While it has been largely replaced by more advanced designs, such as Phillips screws and Torx screws, it remains popular for certain tasks where a straightforward fastening solution is needed.