1937

 Founding by Hermann Armbruster

 1945

 Destruction of the building during the War

 1946

 Reconstruction by the founder and resumption of manufacturing

 1970

 Expansion of the production area using sheds
 with a new administration building

 1985

 New construction of additional manufacturing halls in the new
 Forchtenberg Industrial Park

 1990

 Takeover of SND in Thüringen

 1995

 New construction of the SND manufacturing hall in Schwallungen

 1996

 Expansion of the production spectrum with lockable
 precision shaft nuts (KMT/KMTA)

 2003

 New construction of MFO company building with administration,
 manufacturing and a modern high-bay warehouse