DIN 5156
DIN 5156 Machine taps for pipe threads G 1/16 to G 2 and Rp 1/16 to Rp 2
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2008
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2008