Self Drilling Screws
A self-drilling screw is a type of self-tapping screw that also features a drill point. self-drilling screws have a point that acts as a drill bit and sharp cutting threads that tap the hole during installation. Self-drilling screws are a commonly used variety of screws for quick drilling into both metal and wood. A self-drilling screw can typically be identified by its point and flute (notch) tip. Self-drilling screws do not require a pilot hole, which accelerates installation time and lowers the cost and need for additional drill bits. This cost-saving feature makes self-drilling screws the clear choice for metal building construction.
These screws can be identified by the drill bit-shaped point of the screw and are designed for a variety of applications such as fastening metal to metal and metal to wood. These screws rarely require lock washers or other types of locking fasteners to prevent loosening. During installation, self-drilling screws will also tap threads to a degree.