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Stainless steel fixings for sheet metal, cladding and profile roofing - the fasteners that need to drill their own hole, tap their own thread and stay put through years of thermal cycling.
Hexagon head self-drilling screws (DIN 7504-K) with a purpose-built drill tip that goes straight through steel substrate up to gauge without a pilot hole. Pan and countersunk Pozidriv self-tapping screws (DIN 7981-C, DIN 7982-C) for pre-drilled sheet and thin substrate. A2 (304) as standard, A4 (316) for coastal and industrial-atmosphere roofing.
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