How to set a torque wrench? This question is asked by many mechanics, DIY enthusiasts and professionals from various industries. A torque wrench is an irreplaceable tool that allows you to precisely tighten bolts and nuts with a precisely defined torque . This guarantees that the connections are made properly and safely, eliminating the risk of damage or looseness. Although this tool may seem intuitive to use, setting it correctly is the key to precise work.
A torque wrench is an essential tool for every mechanic. However, it is worth remembering that it requires proper use and maintenance . Improper use is one of the factors leading to mechanical damage. The most common mistakes include:
improper storage – torque wrenches are precision tools with an internal spring that is responsible for the accuracy of the torque. Storing them at high torque puts constant stress on the mechanism. Leaving the key in this condition may lead to deformation of the spring, which directly affects the key's precision. To avoid this problem, always turn the wrench to the lowest available torque setting after use;
no calibration - calibration is the process of adapting the key to standards, which allows it to maintain the precision of its indications. Skipping this step increases the risk of incorrectly tightening the elements and, as a result, leads to their damage. Regularly calibrating your torque wrench ensures that it will perform reliably and accurately throughout its life;
using a wrench as an ordinary tool - using a wrench for purposes other than its intended purpose, such as loosening screws, may overload and damage its internal components. Improper treatment of this tool not only shortens its life, but can also lead to costly repairs or the need for replacement. How to use a torque wrench? First of all, use it as intended and do not treat it as an ordinary key;
ignoring wrench signals - many tools of this type have built-in warning signals, such as clicking or vibration, which inform you when the set torque has been reached. Tightening the screw too much will damage it, while tightening it too loosely can cause the screw to come loose;
incorrectly setting the torque – this is one of the most common mistakes. Incorrect torque setting leads to the material being too loose or too tight, which in turn can cause cracks or deformations. Always check the manufacturer's specifications for appropriate torque for a given component. 
The operation of a torque wrench is based on a mechanism that measures the pressure force and converts it into torque . This tool has a scale that allows the user to select the desired position, adjusted using a knob or digital interface. Inside the key there is a spring mechanism or other flexible element that deforms in proportion to the force applied. When it reaches the deformation level corresponding to the set torque, the key emits a signal, usually a characteristic click. In more advanced models, it is often accompanied by a light or sound effect.
Proper understanding and use of a torque wrench will help you avoid breakdowns and costly mistakes in many areas, from automotive to heavy industry. Still wondering which torque wrench to choose? Take advantage of the assortment offered by the Autos automotive store . We provide not only comprehensiveequipment for car workshops and truck parts , but also full support of professionals in their selection.
