NA 121 Tools and Clamping Devices Standards Committee
The German Standards Committee "Tools and clamping devices" (Normenausschuss Werkzeuge und Spannzeuge (FWS)) of the DIN Deutsches Institut für Normung e. V. is responsible for the standardization on the national (DIN), European (CEN) and international (ISO) level in the following fields: Cutting tools with geometrically determinated edges, clamping devices, modular tool systems, tools for moulding, tools for massive forming, grinding wheels and abrasives, grinding machines, hand-held tools, tools for joining and fastening, operating elements.