指定了三种不同的类型，并给出了互换性和精度要求的尺寸。夹头可用于适当设计的引线长度或引入夹头卡盘，并可用于各种型号的绞盘和转塔车床以及单轴自动车床。

Specifies three distinct types and gives dimensions for interchangeability and accuracy requirements. The collets may be used in either lead length or draw-in collet chucks of suitable design and they may be used in various makes of capstan and turret lathes and on single spindle automatic lathes.