Bolt thread tolerance testing fixture

The utility model discloses a bolt thread tolerance testing fixture which comprises a base, a double-output-shaft motor is fixedly connected to the axis of the bottom of an inner cavity of the base, threaded rods are fixedly connected to the two ends of the double-output-shaft motor, and connecting rods are connected to the surfaces of the threaded rods in a threaded mode. The top of the connecting rod penetrates through the top of the base to be fixedly connected with a clamping plate, a mounting groove is formed in one side of the clamping plate, an inner cavity of the mounting groove is movably connected with a containing cylinder through a bearing, the top of the inner cavity of the mounting groove is fixedly connected with a driving motor, and an output shaft of the driving motor is fixedly connected with a driving bevel gear. The bottom of the driving bevel gear is engaged with a driven bevel gear, and the driven bevel gear is fixedly installed on the surface of the containing cylinder. By adopting the