Fastener with gasket anti-falling function

The utility model discloses a fastener with a function of preventing a gasket from falling off, which belongs to the field of fasteners and comprises a screw component, a gasket area comprises a gasket body and a placing rod, the placing rod is mounted at the middle end of the gasket body in a penetrating manner, and a rotating column is mounted at the top end of the placing rod. The problems that when a screw is taken out of a tool, a gasket of the screw is likely to fall off from the threaded end, an operator needs to spend time in finding the screw, time is wasted, and use is inconvenient are solved. Through arrangement of a threaded rod, a rotating column and a containing rod, the outer surface of a screw body is sleeved with a gasket body, and the rotating column drives the containing rod to penetrate through a rotating groove and be inserted into a threaded hole A; a thread A thin hole in the top end of a limiting block is connected to the outer surface of a threaded rod at the bottom end of a placement