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双头机用丝锥是由高效率机用丝锥发展而来的,该丝锥经济性能较高。使用双头机用丝锥的先决条件是,采用新的快换接头。这些快换接头或装配有安全联轴节和长度调整套或只有长度调整套。这三种丝锥是由
Double-headed machine tap is a high-efficiency machine tap from the development of the tap economy higher. A prerequisite for using double-head taps is the use of a new quick-connect fitting. These quick-release adapters are either fitted with safety couplings and length adjustment sleeves or only length adjustment sleeves. These three taps are made of