TechFast Hex Head Roofing Screw Self-Drill Heavy Section 5.5 x 51mm Pack 100

The TFHH5551 TechFast Hex Head Roofing Screws have the following specifications:

Size: 5.5 x 51mm.
Pack quantity: 100.

These Forgefix TechFast Hex Head Roofing Screws are designed for fixing cladding and sheet steel to heavy section steel purlins of between 6.0mm and 12.5mm.

The screws have a hex head, are self-drilling and have a rubber washer which expands under pressure to form a permanent weather seal. They are zinc plated and have an 'Elementech' coating for superior corrosion resistance, which has been salt spray tested to 1,000 hours.