A torque wrench for controlled tightening of threaded couplings, including a substantially tubular body, a grip positioned at a first end of said tubular body, a tightening head positioned at a second end of said tubular body, a tightening torque setting mechanism positioned inside said tubular body, an indicating device for indicating when the tightening torque set has been reached, a recognition device for recognising an element to be tightened and/or elements that are positioned at the element to be tightened, said recognition device being connected to said tubular body, preferably at said second end, and a control unit connected to said recognition device and designed to associate with the element recognised by said recognition device a tightening torque design value to be set.