Collated coarse thread self drilling screw designed with a ribbed countersunk head allowing the head to easily embed for a flush finish. Self drilling tip allows for faster install, whilst the self drilling tip eliminating the need for pre-drilling. Often used for fixing cement sheeting or villa board to steel framing. These screws have a hardened steel self drilling point (tek point) which cuts through mild steel without the need for pre-drilling. Also ideal for fixing panelling to steel frame sections. The collated strip ensure these screws can be installed rapidly with all professional collated screw guns.