Head for devices rotating upon operation of associated operating tools with internal seat for engagement with the tools themselves

摘要

Head for devices such as screws and the like which can be rotated by means of associated operating tools, comprising at least a first coaxial internal seat (20) which is substantially cylindrical and provided with radial flarings (21) extending radially from the side surface of the seat itself, said flarings having a conical end surface (21b) and lateral flanks (21a) which are parallel to one another and to the longitudinal axis of the screw itself for engagement with said operating tool. <IMAGE>