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Zykon-Panel anchor FZP II M8i

The undercut anchor with an internal thread for M8 threaded screws for natural stone or artificial concrete panels.

The undercut anchor with internal thread for a concealed flush or stand-off installation of heavy façade panels out of natural stone. Calibrated panels or reveal panels can be flush mounted and panel tolerances can be adjusted through the stand-off installation. Due to the internal thread, there is no protruding external thread. Thus panels can be prefabricated and transported in a space-saving manner. This improves the economic efficiency and flexibility of the system.

Product Description

  • The flush-mounted anchor allows for easy, economical construction of reveals.
  • Depending on the application, the user can choose between flush installation with an absolute anchoring depth, for instance for reveal panels, and stand-off installation technology with a constant remaining wall thickness that serves as a reference dimension to compensate panel thickness tolerances.
  • There is no protruding external thread, allowing a space-saving transportation of pre-fabricated façade panels.
  • The matching shape of the undercut anchor creates a inter-locking and stress-free fixing in the conical undercuted drill hole.
  • The fixing is not externally visible, creating a visually appealing façade surface.
  • Setting the anchor using undercut technology allows the user to select the best structural position in the façade panel. This significantly reduces the bending moment of the panel.
  • The anchor allows higher failure loads compared to common systems.

Available Product Variants

3 Product variant (s) found

3 Product variant (s) found

Anchorage depth


Total length




Art.-No. 539478

12 [mm]

12 [mm]


Art.-No. 539479

15 [mm]

15 [mm]


Art.-No. 540298

21 [mm]

21 [mm]


Legend = Permission Available = Permission not Available
Viewed 3 of 3 variant (s)

Application and Permission

  • Exterior façades
  • Interior façades
  • Façade reveals
Building materials
  • Natural stone (>20mm)
* You can find detailed information on building materials in the registration document.


  • ETA-11/0145
  • ETA-22/0400
  • DoP No. 0261
  • DoP No. 0307
For Details see corresponding Documents

Assembly Instruction

  • The hole is either drilled to a constant reference dimension for the remaining wall thickness (RWT) or with an absolute anchoring depth.
  • The anchor can be installed flush or stand-off.
  • The compensation of panel thickness tolerances results in a completely flat façade surface.
  • Wet diamond drilling: first cylindrical, then conical - to create the undercut. #Inserting the undercut anchor in the cylindrical-conical undercut hole
  • Expanding the undercut anchor by "pressing down" the washer using the setting tools
  • Stress-free and geometrical inter-locking fixing
Mounting Strip 1 Picture
Mounting Strip 1 Picture
Mounting Strip 1 Picture
Mounting Strip 1 Picture

Documents for Downloading


Title Type Created Valid Till
ETA Certification Document (PDF, 4 MB) European Technical Assessment for fischer-Zykon-panel anchor FZP II - Fastener for the rear fixing of facade panels made of selected natural stones according to EN 1469 ETA-11/0145 09-06-2022
ETA Certification Document (PDF, 852 KB) European Technical Assessment for fischer ZYKON FZP II for fixing Mirage facade panels ETA-22/0400 25-08-2022
DOP - Declaration of Performance (PDF, 4 MB) Declaration of Performance for fischer Zykon-panel anchor FZP II DoP No. 0261 11-01-2021
DOP - Declaration of Performance (PDF, 4 MB) Declaration of Performance for fischer Zykon-panel anchor FZP II DoP No. 0307 01-07-2022