The device of which to model a smontabile support for a radiator for cetralized heating consists in, that introduces, in particular, a cilindretto (5) conformed so as to introduce, in correspondence of its intermediate part, a ring-like recess (11) on which a pierced disc is leaned (7), in whose hole centered is inserted the stem of a screw (6), whose head goes to porsi in struck against saying disc, while the extremity threaded of said screw leaks from the cilindretto in order to go to engage itself on a compass (9) inglobata in a center to watertight estate (12) mail within the tubular element of the radiator, determining implantation of the support to the aforesaid radiator (fig. 1).