ForgeFix TechFast Self-Drill Heavy Section Steel Hex Head Roofing Screws - 5.5 x 80mm (50 Pack) (TFHH5580)
These 5.5 x 80mm hex head self drilling roofing screws are perfect for fixing cladding or sheet steel to 6mm - 12.5mm heavy section steel purlins.
Heavy section roofing screws suitable for steel thicknesses between 6mm - 12.5mm.Supplied with rubber washer which creates a permanent weather seal once installed under pressure.Finished with an Elemtech coating which is corrosion resistant and salt spray tested to 1000 hours.Fire Resistant.Complies with all the relevant requirements of the standards relating to health, safety and environmental concerns.