Tightening torques are those reference values according to which each nut, bolt, stud, etc. should be tightened to achieve the ideal fastening for that type of item.
The values to follow refer to the table of preloads and base torques for general fasteners. Each strength class has its own specific tightening torque.
International reference tables found online relate the thread diameter to the tightening torque expressed in newton/meters.
The Dynamometric Wrench is the most popular tool for tightening any fastener to the correct torque values and precisely “alerts” us with a click when the set torque value is reached.
