Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Zinc with a washered hexagon head

with a washered hexagon head

Mainly used in soft timber applications or masonry with a plastic plug

Frequently used with self-drilling screws in roofing applications

When the wings hit the metal they will break off to permit the thread to self-tap into the metal

Stainless steel must be used where there is corrosive environment and/or the base material has inherent corrosive characteristics e

Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Zinc with a washered hexagon headSpecifically 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.