Abstract: A bracket for supporting a universal arm of a dental X-ray apparatus having a construction in which: the bracket is provided with at least one of a clearance hole in which a setscrew is loosely inserted, which clearance hole crosses a pair of opposite adjust-screw holes which are connected in series with each other, which adjust-screw holes are threadably engaged with a pair of adjust screws, so that, when the adjust screws are rotated in the adjust-screw holes to be moved forward and rearward while abutting against the setscrew in the clearance hole, the bracket is moved to a desired position to make it possible that the bracket takes a desirable mounting condition.