The difference between the drilling screw and the ordinary self-tapping screw is that the ordinary self-tapping screw needs to go through two processes of drilling and tapping when it isconnected, and the drilling screw combines the drilling and tapping two processes when it is connected.It first uses the drill in front of the screw to drill, and then uses the screw to tap (including fastening connections) to save construction time and improve construction efficiency.
It is mainly used for the connection and fixing of some thin plate parts, such as the connection of color steel plate and colorsteel plate, and the connection of color steel plate and die strip and wall beam.