Connecting bolt for automobile chassis aluminum metal shell

The utility model discloses a connecting bolt for an aluminum metal shell of an automobile chassis, relates to the technical field of connecting bolts, and aims to solve the problems that the conventional connecting bolt cannot adapt to internal hexagonal wrenches with different diameters and internal threads are easy to damage. An inner hexagon is arranged inside the cylindrical head part, an under-head small step is arranged on one side of the cylindrical head part, an under-head thick rod is arranged on one side of the under-head small step, a threaded polished rod is arranged on one side of the under-head thick rod, an inner thread is arranged on one side of the inner hexagon, and an extrusion plate is arranged on one side of the inner thread. Rotating shafts are arranged on the upper portion and the lower portion of one side of the extrusion plate, rotating gears are arranged at the upper ends and the lower ends of the exteriors of the rotating shafts, indicating blocks are arranged on the outer sides of