A clamp for a male terminal, comprising: - a main body having a clamping ring and two jaws, the jaws being movable toward each other in a first direction (X-X) to bring the clamping ring to a clamping position in which the clamping ring is configured to hold a male terminal, - an engagement member movable relative to the main body in a second direction (Y-Y) perpendicular to the first direction (X-X) and acting on the jaws to move the jaws toward each other in the first direction (X-X), - a clamping member operable to move the engagement member relative to the main body in the second direction (Y-Y), said clamping member comprising a stem with a threaded portion and a threaded nut coupled with the stem, wherein - the clamp comprises a base body on which the stem is fixed, the threaded portion of the stem having a distal end and a proximal end, relative to said base body, characterized in that: - said base body is rotatably connected to the main body to switch between a first position, in which the stem is inclined respect to the second direction (Y-Y), and a second position, in which the stem extends in the second direction (Y-Y), - elastic members are interposed between the base body and the main body, and are configured to hold the base body in the first position, - the engagement element has a fixing portion with a slit, the stem being configured to extend through the slit, and the slit being configured to allow the sliding and inclination of the stem relative to the engagement member, - in the first position the fixing portion of the engagement member is disposed between the threaded nut and the distal end of the threaded portion of the stem, whereby the engagement member prevents the threaded nut from engaging the threaded portion, - in the second position the threaded portion of the stem at least partially emerges from the slit of the engagement member towards the threaded nut, thereby being engageable by the threaded nut. - a main body having a clamping ring and two jaws, the jaws being movable toward each other in a first direction (X-X) to bring the clamping ring to a clamping position in which the clamping ring is configured to hold a male terminal, - an engagement member movable relative to the main body in a second direction (Y-Y) perpendicular to the first direction (X-X) and acting on the jaws to move the jaws toward each other in the first direction (X-X), - a clamping member operable to move the engagement member relative to the main body in the second direction (Y-Y), said clamping member comprising a stem with a threaded portion and a threaded nut coupled with the stem, wherein - the clamp comprises a base body on which the stem is fixed, the threaded portion of the stem having a distal end and a proximal end, relative to said base body, - said base body is rotatably connected to the main body to switch between a first position, in which the stem is inclined respect to the second direction (Y-Y), and a second position, in which the stem extends in the second direction (Y-Y), - elastic members are interposed between the base body and the main body, and are configured to hold the base body in the first position, - the engagement element has a fixing portion with a slit, the stem being configured to extend through the slit, and the slit being configured to allow the sliding and inclination of the stem relative to the engagement member, - in the first position the fixing portion of the engagement member is disposed between the threaded nut and the distal end of the threaded portion of the stem, whereby the engagement member prevents the threaded nut from engaging the threaded portion, - in the second position the threaded portion of the stem at least partially emerges from the slit of the engagement member towards the threaded nut, thereby being engageable by the threaded nut.