Bolt with positioning pin

The bolt with the positioning pin relates to the technical field of bolts and comprises a bolt body, a round through groove is formed in the middle of the top of the bolt body, the bottom of the round through groove penetrates through the bolt body and extends to the bottom of the bolt body, and the top of the inner side of the round through groove is rotationally connected with a rotating body. A sliding groove is formed in the middle of the top in the rotating body. The bolt with the positioning pin is easy to operate and high in practicability, the bolt body and the nut form a body of the device, and the round through groove, the rotating body, the sliding groove, the inclined through groove, the inserting rod, the triangular control block body, the threaded sleeve, the positioning pin body, the sliding rod groove and the sliding rod are used, so that the positioning pin body extends and retracts; the use of the telescopic rod groove and the telescopic supporting rod facilitates the installation of the dev