Hexagon bolt convenient to compact

The utility model relates to the technical field of hexagon bolts, in particular to a hexagon bolt convenient to tighten, which comprises a screw rod, a screw cap is arranged at the upper end of the screw rod, a limiting groove is arranged at the upper end of the screw cap, anti-skidding grains are arranged outside the screw cap, a tightening component is connected in the limiting groove, and the tightening component is connected with the screw rod. The tightening assembly is composed of a limiting ring, limiting grooves, a connecting rod, a hexagonal nut seat and an inserting column, the hexagonal nut seat is arranged at the lower end of the connecting rod, the inserting column is arranged at the lower end of the hexagonal nut seat, the limiting ring is arranged at the upper end of the connecting rod, multiple sets of limiting grooves are formed in the middle of the limiting ring, and a pull rod is connected into the limiting ring. A plurality of sets of limiting protrusions are arranged at the position, clo