General description Forgefix TechFast Roofing Sheet to Steel Hex Light Duty Screws are designed for securely joining metal roofing panels to steel frame buildings. These screws feature a No.3 drill tip, allowing for self-drilling in light gauge steel up to 5mm. Technical specifications Size: 5.5 x 75mm Effective Thread Length: 61mm Head Type: 8mm Hex Pack Size: 100 Drill Tip: No.3 Other information Fire resistant and corrosion resistant Protected by Elementech corrosion resistant coating, salt spray tested to 1000 hours Supplied without washer MPN: TFHUWSD5575L EAN: 5028485195115