Countersunk/Flat Screws ALLENKEYS SCREWS Pan Head Phillips Screws: TAPPING SCREWS: MACHINE SCREWS: CHEES HEAD SCREW: SELF DRILLING SCREW: DRY WAL SCREW: LAG SCREW: WOOD SCREW: ROOFING SCREW: SET SCREW: Standard: ASTM / ASME / BS / DIN / JIS / BS EN ISO ... Manufacturer of Stud bolts,Anchor bolts,Nuts,Hex & Heavy Hex Bolts,Pipe clamps …We stock a wide range of self drilling screws which can be used on various materials, with multiple colour and size options to meet your specifications. …Self Drilling Screws, Also Known as TEK Screws, Drill Point, Self Drillers and Self Tapping. Self Drilling Screws are used primarily when fastening into steel or other metals and are typically used to join materials like sheet metal. These screws are identified by the unique point or flute at the end of each screw.Series 500 Self Drilling Screws have a hardened extra long self drilling point which cuts through thick mild steel without the need for pre-drilling. The hex head enables a fast, secure drive into the steel and the fine cut thread allows for threading into thick steel. The galvanised coating is suitable for most outdoor applications.