Adjustable scaffold fastener

The utility model discloses an adjustable scaffold fastener, which belongs to the technical field of scaffold fasteners and comprises a connecting seat, a transverse arc-shaped groove is arranged on one side of the connecting seat, a transverse arc-shaped fixing part is hinged to one end of a convex end on two sides of the transverse arc-shaped groove, and a transverse threaded connecting column is fixed at the other end of the convex end. The transverse threaded connecting column penetrates through the transverse arc-shaped fixing piece to be fixedly connected through the locking nut, inserting openings are formed in the connecting base and the transverse arc-shaped fixing piece, the connecting ends of the two adjusting semi-rings are inserted into the inserting openings respectively to be detachably connected with the inserting openings, and the outer walls of the adjusting semi-rings are matched with the transverse arc-shaped grooves. Array type point-shaped protrusions are arranged on the inner wall of th