Bolt and connecting assembly with same

The utility model discloses a bolt and a connecting assembly with the same. The bolt comprises a head, a neck and a screw, wherein the cross section of the head is oblong, the width of the head is not greater than that of a slot hole matched with the bolt, and the length of the head is greater than the width of the slot hole and not greater than the length of the slot hole; the cross section of the neck is rectangular, the neck is arranged at the lower end of the head, the side length of the neck is not greater than the width of the slot hole, and the length of the diagonal of the cross section of the neck is greater than the width of the slot hole; and the screw is arranged at the lower end of the neck, the outer circumferential surface of the screw is provided with an external thread, and the diameter of the screw is not greater than the width of the slot hole. The bolt can be used for quickly connecting two components under the condition that the space of a spanner is insufficient.