TechFast Light Duty Timber to Steel Roofing Screws 5.5 x 100mm Elementech Box 100

ManoMano

General description Forgefix TechFast Timber to Steel CSK/Wing Screws are designed for joining timber to steel frame buildings. These screws feature a unique design with breakaway wings that create a clearance hole, protecting the thread from engaging with timber during the drilling process. Technical specifications Size: 5.5 x 100mm Clamping Thickness: 80mm Effective Thread Length: 79mm Pack Size: 100 Drill Tip: No.3 Self-drilling capability for heavy gauge steel up to 5mm Other information Breakaway wings ream a hole and break off upon contact with the metal surface TORX® compatible insert for higher power transmission Improved countersinking from recessed ribs Fire and corrosion resistant Complies with EU Safety, Health and Environmental requirements

Amazon

Used for joining Timber to steel frame buildings No.3 drill tip for self-drilling light gauge steel up to 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: 2.8880556322 Pounds, Manufacturer: ForgeFix