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Home ->> Mechanical Anchors ->> FZA

  • Overview
  • Description
  • Advantages
  • Technical Data

    Approved for:
  • Cracked and non-cracked concrete B25 to B55 resp. C20/25 to C50/60
    Suitable for:
  • Concrete B15 resp. C12/15
  • Natural stone with dense structure.
  • Solid brick.
  • Solid sand-lime brick
    For fixing of:
  • Steel constructions
  • Railings
  • Consoles
  • Machines
  • Staircases
  • High racks
  • Wooden Constructions
  • Reinforcement Bards


  • Undercut anchor for pre-positioned (FZA bolt version and internally-threaded anchor FZA-I) and push-through installation (FZA-D bolt version).
  • A cylindrical conical hole with an undercut is produced with the Drill bit FZUB in one work process.
  • When setting the anchor, the anchor sleeve is driven over the cone with a hammer (or setting tool) and fills the undercut hole with a positive fit.
  • Also available: special version FZA ST A4 for man hole step irons according to DIN V 1211 GS / 1212 GS.
  • A4 stainless steel version for outdoor use and in damp conditions, highly corrosion-resistant steel C (material no. 1.4529) for applications in aggressive atmospheres.


  • Positive fit in the undercut gives additional safety.
  • Virtually expansion-free operation allows cost-efficient fixing with very small edge distances and axial spacings.
  • Single-step drilling process simultaneously produces the undercut, saving installation time.
  • Green ring becomes visable when correctly set.


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