Undercut anchors

KEIL Undercut Anchor

KEIL Undercut Anchor KH BH

555 020 ---

Anchor sleeve and threaded pin with inner hex and nut with locking ratchets from stainless steel A4

D1 = drill hole Ø
D2 = undercut Ø
SW = shaft spanner gap
DS = nut head
XA = anchor hex

further dimensions on request

Product information

  • The undercut anchor consists of an anchor sleeve, a threaded pin and a nut with locking ratchets.
  • Drill hole, anchor sleeve and threaded pin length must be matched to the desiredinsertion depth and the bracket of choice. Only the use of matching parts will make the assembly quick, simple and safe.
  • Insert the at the base compressed anchor sleeve into the undercut hole.
  • The anchor sleeve is expanded to its original dimensions by inserting the threaded pin to a controlled depth, making it sit snugly against the panel in the undercut area of the drill hole. After the assembly, the anchor will sit in the undercut hole free of expansion pressure (i.e. the bracket can still be rotated with a certain amount of physical effort).
  • Screw on the bracket with the nut.
  • KEIL undercut anchors are monitored externally.


  • Natural stone
  • Artificial stone
  • Manufactured stone
  • Ceramics
  • HIgh-pressure laminate (HPL)
  • Synthetic material
  • Fibre cement
  • Glass fibre reinforced concrete (GFRC)
  • Glass ceramics

Instructions for use

  • When screwed in, the threaded pin must fit flush with the tip of the anchor sleeve.
  • Use according to approval and KEIL assembly instructions for anchors.
  • Please find documents with relevance to building regulations under certificates.

Packaging unit


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