annulo-spiral
本实用新型一种环箍是由箍带、锁紧螺母等构成，其特点是所述的锁紧螺母的钢丝螺套有一至多圈呈多边形结构。
After the wire thread insert of the hoop of the utility model is installed in the nut, the elastic deformation generated from the radial of the wire thread insert is used to lock the screw.
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