Press stud with an anti-uncoupling system

A press stud comprising a male element and a female element, the male element comprising a coupling portion insertable into a housing seat of the female element in a coupling direction to provide an uncouplable coupling of the male element with the female element, an elastic engagement member mounted in the female element and engaging in a disengageable way the coupling portion of the male element when the coupling portion is inserted into the housing seat of the female element in the coupling direction, the male element and the female element showing, when coupled, a capacity for mutual transverse displacement with respect to the coupling direction to move, when subjected to tension acting in a substantially transverse direction with respect to the coupling direction, from an uncouplable coupled position to a locked coupled position in which the male element interferes with the female element, thereby preventing an uncoupling action and detachment of the male element from the female element, and an elastic centring member exerting an elastic force on the male element and/or on the female element to keep the male element and the female element in the uncouplable coupled position in absence of tension acting in a substantially transverse direction with respect to the coupling direction.