Threads and thread ends for tapping screws (modified version of ISO 1478).
NORMA vydána dne 1.11.1984
Designation standards: DIN 7970:1984-11
Note: NEPLATNÁ
Publication date standards: 1.11.1984
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: German technical standard
Kategorie: Technické normy DIN
Gewinde und Schraubenenden für Blechschrauben.