DIN Standards Committee Tools and Clamping Devices
ISO 3318
Assembly tools for screws and nuts; double-headed open-ended wrenches, double-headed ring wrenches and combination wrenches; maximum widths of heads
Schraubwerkzeuge; Doppelmaulschlüssel; Doppelringschlüssel und Ring-Maulschlüssel; Größte Außendurchmesser am Kopf
Responsible national committee
NA 121-05-01 AA - Assembly tools for screws and nuts, Fastening tools
Responsible international committee
ISO/TC 29/SC 10 - Assembly tools for screws and nuts, pliers and nippers