本文件规定了带法兰接触面的多边形锥度接口的尺寸——用于机床（如车床、钻床、铣床、车铣中心以及磨床）自动和手动换刀的多边形柄。规定了一系列螺杆尺寸。 这些刀柄包括一个带槽法兰，以实现自动换刀。夹紧可通过使用夹紧段的圆形槽或使用中心螺栓的内螺纹实现。 扭矩通过form lock（多边形）传递。

This document specifies dimensions for polygonal taper interfaces with flange contact surface — polygon shanks for automatic and manual tool exchange to be applied on machine tools (e. g. turning machines, drilling machines, milling machines and turn/milling centres as well as grinding machines). A range of shank sizes is specified. These shanks incorporate a grooved flange to enable automatic tool exchange. The clamping can be realized by a circular groove using clamping segments or internal screw threads using centre-bolts. The torque is transmitted by form lock (polygon).