Hand tool for carrying out at least screwing/unscrewing and/or percussion operations on assembling means such as screws, bolts or pins

A handheld tool, for carrying out at least screwing/unscrewing and/or percussion operations for boring, marking, punching, in particular assembling means, such as screws, bolts, pins, comprising:

• at least one body attached to a handle;
• a tool-carrier rod for carrying an impression corresponding to the operation to be carried out;
• and
• integrated means for imparting an axial percussion in the direction of the tool-carrier rod, said integrated means comprising:
• a trigger spring and a lead, interdependent of said trigger spring;
• and
• means for arming the lead and means for triggering the percussion,
• characterised in that:
• the means for arming the lead comprises the tool-carrier rod, provided for moving in translation relative to the body and retractable stemming means, which are attached, on the one hand, to said tool-carrier rod and on the other to said lead, wherein said means for triggering the percussion comprises means for breaking up the stemming effect at the end of travel of the tool-carrier rod and thus release the stored energy;
• a shock rod is provided inside the tool-carrier rod, capable of longitudinal movement relative to said tool-carrier rod, for directly imparting the percussion force to the impression, wherein said lead is capable of moving axially in translation relative to said body and relative to said shock rod of storing energy.