Disclosed is an interchangeable gripper head including: a body defining a longitudinal axis, including a first end intended to be fitted into a nut and a second, free end provided with sectors capable of elastic deformation in a radial direction and intended to receive a removable head; a thrust pin mounted so as to slide along the longitudinal axis inside the body, in a first direction under the effect of a driving force transmitted through the nut by a kinematic connector and in a second direction under the effect of a spring member; and lugs integrally mounted and in a regular angular arrangement on the thrust pin and protruding radially from the surface of the thrust pin through the body of the gripper. The lugs are fixedly arranged in a longitudinal and radial position on the thrust pin by a fixing unit.