BS ISO 240:2016规定了刀具和刀具之间的互换性尺寸 心轴或芯轴，即孔的直径、心轴或芯轴以及驱动元件， 无论是用键还是榫。适用于安装在刀杆或心轴上的所有类型的铣刀。交叉引用:ISO/TS 13399-4购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 240:2016 specifies the dimensions for interchangeability between the cutter and the arbor or mandrel, i.e. the diameter of the bore and the arbor or mandrel and elements of the drive, whether by keying or tenon.It applies to all types of milling cutters mounted on cutter arbors or mandrels.Cross References:ISO/TS 13399-4All current amendments available at time of purchase are included with the purchase of this document.