TechFast Heavy Duty Timber to Steel Roofing Screws 5.5 x 150mm Elementech Box 50

ManoMano

General description TechFast Timber to Steel CSK/Wing Screws are designed for joining timber to steel frame buildings. These screws feature a No.5 drill tip for self-drilling into heavy gauge steel up to 12.5mm thick. They are equipped with breakaway wings that create a clearance hole, preventing the thread from engaging with the timber during drilling. Once the wings contact the metal surface, they ream the hole and break off, allowing the thread to engage securely with the metal. Technical specifications Size: 5.5 x 150mm Clamping Thickness: 121mm Effective Thread Length: 122mm Pack Size: 50 Drill Tip: No.5 Self-drilling capability for heavy gauge steel up to 12.5mm Other information Fire and corrosion resistant TORX® compatible insert for enhanced power transmission Improved countersinking from recessed ribs Complies with EU Safety, Health and Environmental requirements

Amazon

Used for joining Timber to steel frame buildings No.5 drill tip for self-drilling light gauge steel up to 12.5mm Screw fitted with breakaway wings that create a clearance hole to protect thread from engaging timber when drilling through Breakaway wings will ream a hole then break-off when they contact the metal surface to be drilled Torx compatible insert for a higher transmission of power, Weight: 2.3368999772 Pounds, Manufacturer: ForgeFix