TechFast Roofing Timber to Steel Light Section Screw 5.5mm x Various Winged Roofing Screws. Timber to Steel. (For Light Section Purlins) Countersunk Head Screw. Timber to Steel Purlins Head: Countersunk Torx compatible, Winged, Self-Drilling Point Finish: New ‘Elementech’ coating for superior anti-corrosion – salt spray tested to 1000 hours -FOC Torx compatible bit in every pack -TechFast light section screw will fix timber to steel thickness between 1.5mm to 4mm -Self-drilling point enables improved and speedy insertion -Wings create a clearance hole in the timber which eliminates the chance of “jacking” when fixing -Designed specifically for fixing timber work to steel sections
