Commonly used in electrical equipment, electronic machinery, mechanical equipment, household appliances, digital products, water conservancy projects, decoration and construction and so on. Countersunk head screws are generally made of metal screws and wires, which are formed and twisted into a cylindrical shape with a flat head. For example, an inclined surface around the side of a screw can be used to lock the screw cap or other objects. Countersunk head screws are large in diameter and can be round or hexagonal in shape, allowing tools such as screwdrivers or wrenches to turn the screws. The protruding top also prevents the screws from drilling too deeply through the material and increases the pressure of the screws on the material. Countersunk head screws can usually be removed or reattached at will without compromising their efficiency. They also provide greater strength than nails and can be reused. Countersunk head screws are used in products above the material, the head can be completely sunk, the screw head will not hinder the role.