Undercut anchors

KEIL Undercut Anchor

KEIL Undercut Anchor KH CA (Plug-In Anchor)

555 720 ---

Anchor sleeve and reduced threaded bolt from stainless steel A4

D1 = drill hole Ø
D2 = undercut Ø
h = panel thickness
SW = shaft spanner gap
XA = anchor hex

Product information

  • The KEIL plug-in-bolt in connection with the KEIL undercut anchor allows for the attachment of natural stone panels without any substructure.
  • The retaining and load-baring bolts are attached to the back side of the panel with
    the aid of the undercut anchor.
  • The holes drilled into the substrate are filled with permissible mortar.
  • The plug-in-bolts on the façade panel are inserted into the filled drill holes.
  • The façade panel is adjusted and fixed. After the temperature-related setting time, the panel is anchored safely and without expansion pressure. With/without insulation.
  • Single panels can be replaced subsequently.
  • High degree in safety due to the optimal distribution of the weight load.
  • The correct screw-in depth is warranted by the system.
  • KEIL undercut anchors are monitored externally.


  • Natural stone
  • Artificial stone
  • Manufactured stone
  • Ceramics
  • High Pressure Laminate (HPL)
  • Synthetic material
  • Fibre cement
  • Glass ceramics

Instructions for use

  • from l4 > 90 mm surface grooving onwards Use according to approval and KEIL assembly instructions for anchors.
  • Please find documents with relevance to building regulations under certificates.



further dimensions on request

KARL Undercut Anchor

KEIL Fasteners

KEIL reveal attachment sets

Drilling tools

Diamond tipped façade drill bits

Carbide tipped façade drill bits

Drilling technology

Drilling machines

Machine Accessories

Spare parts

Assembly aids

Depth control guide

Assembly aids

to the