Threaded connection anti-loosening structure and radio frequency connector

The utility model discloses a threaded connection anti-loosening structure, which comprises a socket and a plug, the socket comprises a socket shell and a locking nut, the front end of the socket shell is provided with an external thread and a clamping groove, and the clamping groove is arranged at the rear side of the external thread; the plug comprises a plug shell, a shell arranged on the outer side of the plug shell and a nut arranged on the outer side of the shell, a spring and a gasket are arranged between the shell and the nut, a check ring and a clamping pin are arranged at the front end of the nut, a clamping block is arranged on the inner side of the front end of the shell, internal threads are arranged on the inner wall of the clamping block, the internal threads are matched with the external threads, and the clamping pin is matched with the clamping groove. According to the threaded connection anti-loosening structure, the socket is provided with the external thread and the clamping groove, and th