Fire proof installation by the push of a thumb 16 November 2017

Schnabl Stecktechnik GmbH has launched the MDSN – Metal Down Nail – which is a patented solution for the fire proof fastening of safety-critical electrical installations, such as sprinkler systems, smoke and heat vents or elevators and emergency lighting.

In tests, the MDSN’s fire resistance of R30 to R120 enables it to be used together with most cable holding devices approved according to DIN 4102-12,
which must withstand flames lasting at least 30 minutes and up to 120 minutes.

Schnabl Stecktechnik points out that the installation holders are securely fastened to the wall or ceiling within seconds. All that is required is a drill to create a 6mm hole, then the MDSN can be used to fix the cable holding device by the push of a thumb into the hole. No further tool is required – no dowel, no screw and no screwdriver. As a result, installation time is reduced compared to traditional fastening methods. 

Due to the patented profile of its teeth, the MDSN reaches a high holding force when installed safely in the wall or ceiling, even under extreme circumstances.

The MDSN has a European Technical Assessment (ETA – 16/0673) and was tested by several European Institutions, including the Building Materials Testing Institute at Braunschweig Technical University.


Will Lowry Editor t: +44 (0) 1727 814 509


Will joined Fastener + Fixing Magazine in 2007 and over the last 12 years has experienced every facet of the fastener sector - interviewing key figures within the industry and visiting leading companies and exhibitions around the globe.

Will manages the content strategy across all platforms and is the guardian for the high editorial standards that the Magazine is renowned.