30-degree wedge-shaped thread stop screw

The utility model discloses a 30-degree wedge-shaped thread stop screw which comprises a stud main body, a screw cap is fixedly connected to the top of the stud main body, a connecting rod is connected to the inner surface wall of the stud main body in a sliding mode, a screw rod is connected to the interior of the stud main body in a screwed mode, and a connecting block is connected to the bottom of the screw rod in a rotating mode. According to the 30-degree wedge-shaped thread stop screw, when the 30-degree wedge-shaped thread stop screw is used, the screw is firstly installed in an installation hole of an object needing to be fixed, the process is achieved by screwing the screw through a tool, after screwing of the stud body is completed, the rotating disc is rotated to drive the screw rod to rotate in the screw cap and move downwards, the screw rod moves downwards to drive the connecting block to move downwards, and then the bolt body is fixed. The connecting block moves downwards to abut against the two