Improved pressure button

A pressure button, of the type comprising a male portion and a female portion, to be applied on flaps to be connected, the female portion comprising a fixing element for fixing an active female element, the latter including a plurality of resilient tabs which are mutually arranged with a ring arrangement about a housing recess for housing a projecting part of the male portion. The active female element of the button comprises an annular body to which a clamp element including a plurality of points projecting outside of the active female element is affixed. In particular, the assembling means for assembling the female portion are so arranged as to operate at a separated and moved away position from the resilient tabs, thereby the assembling of the female portion, for applying the latter on a respective material flap, can be performed without modifying the mutual shape and/or arrangement of the resilient tabs, thereby preserving the rated clamping pressure of the button.