DIN 41652-1
DIN 41652-1 Rack and panel connectors, trapezoidal, round contacts <Durchmesser> 1 mm; common mounting features and dimensions; survey of types
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/1990
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/1990