Techfast TFCH55109 Roofing Screw Timber-to-Steel Heavy Section 5.5x109mm Pack 50

Forgefix TechFast Roofing Screws are heavy-duty fasteners designed for joining timber to steel or heavy section purlins. They feature a self-drilling point and breakaway wings that create a clearance hole in timber, preventing jacking and ensuring a strong bond with steel surfaces. The screws have a countersunk, Torx-compatible head that sits flush with the surface for a neat finish. The fixing is zinc-plated with an Elemtech coating that is corrosion-resistant and salt spray tested for 1000 hours. They are suitable for steel thicknesses from 6.0mm to 12.5mm and are supplied in a pack of 50 screws, with a Torx-compatible bit included for installation. These TechFast Roofing Screws are intended for joining timber to steel frame constructions and for fixing to heavy section purlins. They are designed to penetrate quickly and maintain a secure connection while protecting the thread during drilling through timber and steel.”

Features

• Self-drilling point for quick penetration
• Breakaway wings create a timber clearance hole
• Torx-compatible countersunk head sits flush
• Zinc-plated with Elemtech coating for corrosion resistance
• Suitable for timber-to-steel joints on 6.0–12.5mm steel

Installation and specifications

These TechFast Roofing Screws are used for joining timber to steel frame buildings and for heavy section purlins. They have a Torx-compatible countersunk head to sit flush to the surface. The self-drilling point enables speedy insertion and the wings create a clearance hole to prevent jacking when fixing. Breakaway wings ream a hole and break off when they contact the metal surface. The screws are zinc-plated with an Elemtech coating for superior anti-corrosion, salt spray tested for 1000 hours. Suitable for fixing timber to steel thicknesses of 6.0mm to 12.5mm. Each pack includes a free Torx-compatible bit. Size: 5.5 x 109mm. Pack quantity: 50.