The utility model is not easy to loose and rotate after tightening, so as to effectively improve the service life of the hubbolt and the hub.
本实用新型在拧固后不易松动旋转，有效地提高了轮毂螺栓和轮毂的使用寿命。
3
He says a little machining needs to be done on the cathode tube, making a threaded bolthub that is welded to the tube via an inert gas shield welder, or tig.