Tang thread fastening and forced lock nut fastening.
即唐氏螺纹紧固及硬锁紧螺母紧固。
The utility model discloses a double thread fastening device.
本实用新型公开了一种双头螺纹紧固装置。
A method for producing fiber-reinforced plastic screw-like fastening element including a thread portion and a head having a cross section which is larger than that of the thread portion.
一法生产纤维增强塑料螺钉拧等元素，其中包括一个线程部分和头部有一个截面，比线程的部分大。
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