Product group image
Application picture
Application picture
1   1

Aircrete anchor FPX-I

The strong internally threaded anchor with unique 4-way expansion for fixings in aerated concrete

The fischer Aircrete anchor FPX-I is made of zinc-plated steel. After pre-drilling, the FPX-I is only driven in with the hammer. It is not necessary to clean the drill hole. The fischer Aircrete anchor is applied with a hex driver via a cordless screwdriver or via a ratchet. The cone is then pulled into the expansion sleeve. In this case the four wings create an undercut in the drill hole. After expansion, the hex socket is automatically released. The fischer Aircrete anchor FPX-I is ideally suited for fixing suspended ceilings, railings or kitchen cabinets in aerated concrete.

Product Description

  • The FPX-I enables easy tightening via the hexagon wrench using a cordless screwdriver or ratchet and therefore offers top installation comfort.
  • The deformation-controlled expansion of the anchor with the hexagon wrench ensures safe, even and gentle installation. 
  • The unique 4-way expansion of the FPX-I with a square expansion sleeve prevents the rotation of the anchor in the drill hole and ensures high tension and shear loads, which means fewer fixing points.
  • The releasing of the hexagonal wrench guarantees an automatical setting control for each installation process.
  • The first steel anchor with an ETA-Approval and fire protection certificate for fixings in aerated concrete enables use for safety-relevant fixings, too.

Available Product Variants

Application and Permission

  • Suspended ceilings
  • Cable trays
  • Pipelines
  • Ventilation ducts
  • Guard rails/hand rails
  • TV consoles
  • Kitchen cupboards
  • Stand-off installations
Building materials
Approved for:
  • Aerated concrete with compressive strength 2 to 7 N/mm²
  • Aerated concrete wall or ceiling boards with compressive strength 3.3 to 4.4 N/mm²
  • Planked aerated concrete masonry, e.g. plastered, tiled, papered etc.
You can find detailed information on building materials in the registration document.


  • ETA-12/0456
  • DoP No. 0132
  • DoP No. 0756-CPD-0493
For Details see corresponding Documents

Assembly Instruction

  • The FPX-I with internal thread is suitable for pre-positioned installation.
  • Pre-drilling enables easy hammering in, even in high-strength aerated concrete. There is no need to clean the drill hole.
  • When the anchor is tightened with the hexagon wrench, the internal thread sleeve starts to rotate and the cone is pulled into the square expansion sleeve. The aerated concrete is compressed on the four sides and generates an undercut in the drill hole.
  • When reached the optimum expansion, the hexagon wrench is released automatically from the anchor.
Installation graphic
Installation graphic
Installation graphic
Installation graphic
Installation graphic

Documents for Downloading

Additional Documents


Title Type Created Valid Till
ETA - European Technical Assessment (PDF, 3 MB) European Technical Assessment for fischer aircrete anchor FPX-I - Metal expansion fastener for use in autociaved aerated concrete ETA-12/0456 27/11/2017
DOP - Declaration of Performance (PDF, 1 MB) DoP No. 0132 04/12/2017
DOP - Declaration of Performance (PDF, 1 MB) DoP No. 0756-CPD-0493 12/06/2013

System Components & Related Categories

System Components