50 x Roofing & Cladding Screws 5.5 x 57mm Self Drill

Roofing & Cladding Self Drilling Screws

Pack of 50

Premium self drilling roofing and cladding screws. 

Size: 5.5 x 57mm.

Washered self-driller with hex head for a 8mm socket.

For fixing cladding and sheet steel to steel purlins.

Zinc plated Elementech coating for superior anti-corrosion - salt spray tested to 1000 hours.

The 16mm rubber washer beneath the aluminium flange expands under pressure and forms a permanent weather-seal.

Designed for fixing cladding and sheet metal to light and heavy structural purlins as used when constructing industrial units.