Flathead screws are a type of fastener characterized by a flat, countersunk head that allows them to sit flush with the surface of the material they are fastened to. This design is particularly useful in applications where a smooth finish is desired, such as in woodworking or metalworking. They are typically driven using a screwdriver with a matching flat blade. These screws come in various sizes and materials, including steel, stainless steel, and brass, making them versatile for different projects. Flathead screws are commonly used in furniture assembly, cabinetry, and construction, providing a secure hold while maintaining an aesthetically pleasing appearance.