Three Pack Air Anti-Loosening Combined Mechanical Screw

 The anti-loosening bolt comprises a bolt and a nut body (1) which is in threaded fit with the bolt. The anti-loosening bolt is characterized in that an inclined hole (2) in an inclined nut fastening direction is formed in the side wall of a nut, wherein inner threads are formed in an outer hole mouth part of the inclined hole; a marble (3), a spring (4) and a screw (5) are arranged in the inclined hole from inside to outside in sequence; the marble comprises a smooth tip part (31) which extends out of the inner hole mouth of the inclined hole under the thrust of the spring (4); the screw (5) is in threaded fit with the inclined hole; a plastic plug (6) which is in clearance fit is arranged on the inner circle of the nut. When the nut does not rotate, the tip end of the marble is tightly resisted against between the screw and a nut gap under the action of the spring; when the nut rotates towards the fastening direction, the marble extrudes the spring, so that the spring is compressed, the marble is retracted into the hole, and the rotation of the nut is not affected. When the nut rotates reversely, the screw and the nut are locked by the marble, so that the nut cannot rotate, and thus, a unidirectional rotary function is realized, and the nut can be effectively prevented from being dismounted.

China manufacturer three pack air anti-loosening combined Mechanical Screw