DIN 4000-151
DIN 4000-151 Tabular layouts of properties - Part 151: Connecting parts for hand- and machine-operated assembly tools for screws and nuts
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2005
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2005