The top diameter of the countersunk screw is large, and it can be round or hexagonal, so that tools such as screwdriver or wrench can turn the screw. The protruding top also prevents the screw from drilling too deep through the material and increases the pressure of the screw on the material. Countersunk screws can usually be removed or re-inserted at will without compromising their efficiency, and can also provide greater strength than nails, and can also be reused. The head of the countersunk screw can be completely sunk on the product material, and the screw head will not play a blocking role.Commonly used in electric equipment, electronic machinery, mechanical equipment, household appliances, digital products, water conservancy projects, decoration and construction, etc