Abstract: An adjustable steering column unit includes a steering shaft having one end carrying a steering wheel and the opposite end connected to the rest of the steering mechanism, the shaft being movable in rotation in a column body (4), the body and/or the shaft being angularly and/or axially movable between two flanges of a fixing structure (5) for fixing the body to the remainder of the automobile vehicle, and the fixing structure comprising, at one end, locking means for locking the body in position and movable between locking and unlocking positions to permit the adjustment of the position of the steering wheel and, in proximity to the other end of the fixing structure, a guide bearing (7) for the body. The bearing (7) has a yoke portion, having a U-shaped section, of the fixing structure (5), in which is disposed a bushing (8) for mounting the body (4) without play. Opposed lateral walls of the bushing are connected to the flanges (7a,7b) of the yoke portion.