Forgefix TechFast Roofing Sheet to Steel Hex Heavy-Duty Screws are used for joining metal roofing panels to steel frame buildings. The screws are fire resistant and corrosion resistant. Protected by Elementech corrosion resistant coating salt spray tested to 1000 hours. Complies with EU Safety Health and Environmental requirements. Supplied without washer.These Forgefix TechFast Roofing Sheet to Steel Screws have the following specification: Size: 5.5 x 40mmEffective Thread Length: 21mmHead Type: 8mm HexPack Size: 100Drill Tip: No.5 No.5 drill tip for self-drilling in heavy gauge steel up to 12.5mm.PTDFORTFH5540H
