Abstract: Hinge for connecting a shaft (11) to the corresponding end part (A) of a frame (C) for spectacles, in which said end is made of metal wire and folded in the form of at least one first arm (2) and one second arm (3), lying in different planes and splayed with respect to one another, one (3) of said arms having the free end folded so as to form a pin (4) on which there is inserted a cam element (13) fixed to one end (12) of said shaft (11), wherein said cam element (13) has at least two adjacent surfaces (13a, 13b) substantially perpendicular to one another and defining at least one first corner (13c) and at least one second corner (13d), said surfaces (13a, 13b) and corners (13c, 13d) acting in sequence on said pin and on said first arm (2) of the end (A) of the support frame (C) of the spectacles so as to cause an elastic recall reaction on said pin (4) both during opening/closing of the shaft and in the event of forced splaying from the open position thereof.