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Drilling screw, hexagon head with undercut and sealing washer piasta®
Drilling screw, hexagon head with undercut and sealing washer piasta<SUP>® </SUP> - 1
Drilling screw, hexagon head with undercut and sealing washer piasta<SUP>® </SUP> - 2
Drilling screw, hexagon head with undercut and sealing washer piasta<SUP>® </SUP> - 3
Drilling screw, hexagon head with undercut and sealing washer piasta<SUP>® </SUP> - 4
Drilling screw, hexagon head with undercut and sealing washer piasta<SUP>® </SUP> - 5

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Drilling screw, hexagon head with undercut and sealing washer piasta®


A2 stainless steel with drill bit tip and moulded thread made of hardened steel. Screwing on of steel and aluminium profiles in steel and aluminium without over-turning ≤ 2 mm

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The sealing washer consists of an A2 stainless steel metal back with vulcanised seal made of high-quality EPDM



Suitable for component combinations tI/tII according to approval ETA-10/0184


  • Steel/steel for ∅ 4.8 mm and ∅ 5.5 mm

  • Aluminium/steel for ∅ 4.8 mm and ∅ 5.5 mm

  • Aluminium/aluminium for ∅ 4.8 mm and ∅ 5.5 mm

  • and additionally for ∅ 5.5 mm steel/2 x steel (cassette attachment)


The thread-free part (undercut) below the screw head prevents the screw from overturning and thus ensures that splice plate screw connections in thin metal profiles are safe from working loose.