Keep Nut

HA-CO Switzerland and Keep Nut for heavy duty threads!

The Keep-Nut® is an innovative fastener, it allows the production of threaded connections in hard and brittle materials such as marble, granite or carbon fiber, without gluing or form-fitting. The Keep-Nut® consists of a stainless steel body with an elastic castle nut that deforms and penetrates the material when the screw is tightened. The Keep-Nut® offers high tensile strength, ease of installation and shallow installation depth. Pull-out forces of up to 500 kg and more per Keep-Nut are possible, due to the load distribution in the material.

Keep Nut Gewindehülse Specialinsert HA-CO 1
  • Can be used in hard materials such as marble, corian, carbon,...
  • Good anchoring due to the serrated spring rings (crowns)
  • Quick and easy press-fit…
Keep Nut Gewindehülse Specialinsert HA-CO 1
  • Anchor for rear fixing of facade panels according to EN 14411:2012
  • Approved for building products according to ETA 15/0615ETA
  • Stainless steel AISI…

Keep Nut threaded sleeve for marble, granite, concrete or carbon fiber - HA-CO Switzerland