They joined subassociation competitions in the 1939–40 season and won the second tier Koroška group ahead of their neighbors SK Mislinja.

In the next year, they played in Maribor League West, but the season was interrupted because of the outbreak of World War II in Yugoslavia.

Their biggest success in the time of SFR Yugoslavia came in the 1965–66 season, when they played on a new stadium in newly-formed Slovenian Zonal League East and finished second.

There was also an attempt of merging all the clubs from the region under the name of Koroška in the 1979–80 season, but the short-lived project proved to be unsuccessful.

After Slovenia's independence in 1991, they found themselves in the lowest possible league and the club was reorganized as KNK Fužinar in the mid-1990s.