Washered Self-Driller. Steel Sheet to Steel Purlin.
Head: Hexagon Self-Drilling.
Finish: New Elementech coating for superior anti-corrosion - salt spray tested to 1000 hours.
TechFast screws for light section purlins will fix material to purlins between 1.2mm to 3.6mm.
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.
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