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Case-hardened, zinc-plated blue passivated steel and sealing washer. For attaching steel profiles to steel substructures ≤ 5 mm
DIN 7500-1, flat head, case-hardened (-O-) galvanised steel, blue passivated (A2K)
For attaching metal profiles to metal substructures made of steel or aluminium
ISO 4762-compliant head shape, galvanised steel, blue passivated (A2K)
For fastening aluminium profiles to aluminium substructures ≤ 4 mm
WN 111-compliant, steel, black Delta Seal, shape C, with tip
For thermoplastics