Self Drill Screw tapping screws are one of the most commonly used industrial fasteners. As on of the earliest engineered fastener products, self-tapping screws were manufactured out of hardened steel, and their use powered the Industrial Revolution. Still incredibly common today, self-tapping screws now include many styles and types made for specific fastening functions. SDS screw is mostly use in Poly house, Shade net house , Low cost net house, Wire rope net house. It is use for auto use in Gi Pipe Drilling.