ANSI Carbon Steel Screws High Strength Zinc-Plated Self-Tapping for Wood or Metal Metric Measurement System

Self-drilling screw is a screw that can tap its own hole as it is driven into the material. For hard substrates such as metal or hard plastics, the self-drilling ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a regular machine screw cannot tap its own hole in a metal substrate, a self-drilling one can (within reasonable limits of substrate hardness and depth).

Suitable for metal connections, such as in steel structural connections, for the installation of light steel keels. In the construction of metal roofs, self-drilling screws are widely used because of their ability to drill and lock directly. In addition, they have important applications in industrial assembly, furniture manufacturing, home appliance assembly, automotive and mechanical equipment manufacturing, as well as the connection of household and light industrial products. Self-drilling screws have become the choice of many industry standard fasteners because of their efficiency and convenience, saving construction time and labor costs.