The tail of the drill tail screw is in the shape of a drill tail or a pointed tail. It does not need to drill holes on the workpiece first, and can directly drill, tap, and lock on the setting material and base material. Compared with ordinary screws, the drill tail screw High tenacity and retention force, it will not loose after a long time of combination, easy and safe to use, drilling and tapping can be completed in one operation, saving time, labor and labor. Drilling screws are mainly used to fix metal plates such as steel plate fasteners, generally used for locking metal plates and non-metallic plates, such as for directly fixing silicon-calcium boards, gypsum boards and various wood boards on metal plates. Drilling screws with reasonable design and structure can make the metal plate and the mating plate tightly locked, avoiding damage and scratches of the mating plate, and are easy to install.