BS ISO 4202:2016规定了带有外部7/24锥度（编号30、40、45、， 50和60），适用于带有莫氏锥柄（1号至6号）的工具。所有这些套筒都允许驱动带有莫氏锥柄的工具，该锥柄的小端有一个榫头 小腿；一些套筒允许驱动带有莫氏锥柄的工具，该锥柄具有轴向 螺杆上的螺纹孔:使用套筒30×1-40×1-40×2-45×1-45×2-45×3的组合螺钉- 50 × 2 - 50 × 3 - 50 × 4 - 60 × 3 - 60 × 4 - 60 × 5;使用30×1-30×2-40×1-40×2-40×3-45×1-45×2套筒拉杆- 45 × 3 - 45 × 4 - 50 × 2 - 50 × 3 - 50 × 4 - 50 × 5 - 60 × 3 - 60 × 4 - 60 × 5 - 60 × 6.莫尔斯锥度符合ISO 296，而7/24锥度符合ISO 297。交叉引用:ISO 296ISO 297ISO 2583ISO 13399购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 4202:2016 specifies the dimensions of reduction sleeves with external 7/24 taper (Nos. 30, 40, 45, 50 and 60) for tools with Morse taper shanks (Nos. 1 to 6).All these sleeves allow driving of tools having Morse taper shanks which have a tenon at the small end of the shank; some sleeves allow driving of tools having Morse taper shanks which have an axially tapped hole in the shank:with the use of an incorporated screw for sleeves 30 × 1 - 40 × 1 - 40 × 2 - 45 × 1 - 45 × 2 - 45 × 3 - 50 × 2 - 50 × 3 - 50 × 4 - 60 × 3 - 60 × 4 - 60 × 5;with the use of a draw bar for sleeves 30 × 1 - 30 × 2 - 40 × 1 - 40 × 2 - 40 × 3 - 45 × 1 - 45 × 2 - 45 × 3 - 45 × 4 - 50 × 2 - 50 × 3 - 50 × 4 - 50 × 5 - 60 × 3 - 60 × 4 - 60 × 5 - 60 × 6.Morse tapers conform to ISO 296 while 7/24 tapers are in accordance with ISO 297.Cross References:ISO 296ISO 297ISO 2583ISO 13399All current amendments available at time of purchase are included with the purchase of this document.