2023-08-07
Rostfri expansionsskruv - fixeringsprincip
The stainless steel expansion screw is composed of a screw and an expansion tube. The tail of the screw is conical, and the inner diameter of the cone is larger than the inner diameter of the expansion tube. When the nut is tightened, the screw moves outward, and the axial movement of the thread causes the cone to move, thereby forming a large positive pressure on the outer peripheral surface of the expansion tube, and the angle of the cone is small, so that the wall, the expansion tube Friction self-locking is formed between the cone and the cone, and then the fixing effect is achieved.