Fischer FZA Zykon Undercut Anchor

The FZA features special Zykon undercut anchor technology which allows for a positive fit connection and ensures maximum safety even in large cracks.

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  • Applications
  • Advantages
  • Versions
  • Approvals
  • Base Materials
  • Facades.
  • Steel beams and steel structures.
  • Balustrades.
  • Machine mounting.
  • Staircases.
  • Gates.
  • Uses ZYKON undercut anchor  technology to provide positive fit and ensures maximum safety, even in large cracks.
  • Small edges distances and axial spacing due to minimal expansion forces.
  • The FZA-D combination of threaded bolts and sleeve permits high shear load.
  • The FZA-I can be used for surface removal and re-use of the fixing point.
  • Special drill bit which creates the undercut shape without having to change tools.
  • Zinc plated
  • A4-316 stainless steel
  • Highly corrosion resistant steel – (FZA and FZA-D types)


Approved for:-

  • Concrete C20/25 to C50/60 cracked and non-cracked

Also suitable for:-

  • Concrete C12/15
  • Natural stone with dense structure



VersionThread diameterBolt lengthMaximum fixture thickness
Zinc plated
Stainless steel A4Highly corrosion
FZA Zykon Bolt Anchor

Suitable for pre positioned installation

M6 to M1660 to 209mm10 to 60mmFZA Zykon Technical Data PDF
FZA-D Through Anchor

Suitable for push through installation

M8 to M1669 to 156mm10 to 50mmFZA-D Technical Data PDF

FZA-I Internally Threaded Anchor

Suitable for pre positioned installation

internal thread M6 to M12max bolt penetration 13 to 25mmFZA-I Technical Data PDF