ITW TEKS ROOFING SCREW HEX WASHER HEAD DRILL POINT 21418 #12 X 1"" TEKS ROOFING SCREWS PROVIDE SECURE METAL-TO-WOOD FASTENING WITH STRONG HOLDING POWER WITHOUT THE NEED TO PRE-DRILL. SHARP SELF-PIERCING POINT IS IDEAL FOR FASTENING CORRUGATED ROOFING PANELS TO WOOD STRUCTURES. SELF-SEALING NEOPRENE WASHER PROVIDES A WATERPROOF SEAL AND A PREMIUM FINISH PROVIDES EXCEPTIONAL CORROSION RESISTANCE IN HARSH OUTDOOR ENVIRONMENTS. INSTALLS WITH A STANDARD SCREWGUN AND A 1/4 IN. HEX DRIVE BIT. FEATURESUL STYLEMARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX; NO PRE DRILLING NECESSARY SCREWS TAP THEIR OWN HEADS SECURE FASTENING WITH STRONG HOLDING POWER ENGINEERED DRILL POINT AND FLUTE (PILOT SECTION) REMOVES MATERIAL EFFICIENTLY AND SIZES THE HOLE FOR THREADS