The critical part of an SDS (Self-Drilling Screw) is its drill point. The drill point is the specially designed tip of the screw that allows it to drill its own hole into the material being fastened, without the need for pre-drilling. The design of the drill point varies depending on the specific application and material being fastened, but generally consists of a fluted shape that helps to remove material as the screw is driven in. SEC have a patent drilling tip that have higher stability, thicker penetrating capability, faster drilling speed.
The shape and size of the drill point can affect the performance of the SDS, as well as its ability to drill through different materials. For example, a larger drill point may be needed for thicker or harder materials, while a finer point may be better suited for softer or more brittle materials. The shape of the flutes can also affect the amount of material that is removed and the speed at which the screw can be driven in.
Other critical parts of an SDS include the shank, which is the main body of the screw that contains the threads, and the head, which is the top of the screw that provides a surface for driving and tightening the screw. The shape and size of the shank and head can also affect the performance of the SDS, as well as its ability to distribute load and resist pullout or other forms of failure.