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The International Standard ISO 7388-1 has been prepared by Technical Committee ISO/TC 29 "Small tools", the secretariat of which is held by AFNOR (France), with the participation of German experts of Standards Committee "Tools and Clamping Devices" (FWS) at Working Committee NA 121-02-05 AA "Werkzeugaufnahmen und Schnittstelle Maschine/Werkzeuge" ("Tool holders and machine/tool interface"). This document replaces the previous national standard DIN 69871-1:1995-10 for tool shanks and specifies the dimensions of tool shanks with a 7/24 taper, of shank forms A, AD, AF, U, UD and UF (with two possible additions for each), for automatic tool changers, used on machines having an automatic gripping system for feeding tools from the magazine to the spindle and vice-versa. These tools are designed with the most important dimensions for use in spindle noses according to ISO 9270.
This document replaces DIN 69871-1:1995-10 .