Specifically designed to attach wood to heavy section steel (Max. 12mm). Metric thread with wings designed to ream out the timber, so the screw can achieve Max. R.P.M. without burning out. When the wings hit the metal they will break off to permit the thread to self-tap into the metal.
Screws / Metal Construction Screws / Roofing & Construction Screws / Wing-Tip Screw - Heavy Section Steel / Wing-Tip Screw - Heavy Section Steel - Zinc / Wing-Tip Self-Drilling Screws - Countersunk - PH - For Timber to Heavy Section Steel - Zinc