To provide a pole with a joining screw with a highly accurate and hardly loosening joining part.

In the pole 1, a male part 2 is provided in one end part of a body 11 and a female part 3 is provided in another end part of the body 11. In joining, a guide shaft 21 of the male part 2 is inserted in the female part 3. The guide shaft 21 is inserted while its width direction attitude is regulated by a ridge parts of a screw part 33. When the guide shaft is inserted deeper, it is screwed in while it is guided by a guide hole 31. When screwing is finished, since the guide shaft 21 is more accurately guided by the guide hole 31, accuracy of the joining part is enhanced.