Torque screwdrivers

When repairing the car it is often required to tighten threaded fasteners, adhering to the prescribed value of the tightening torque. For correct performing of these works you should buy torque screwdrivers. When reaching the specified torque they make a characteristic sound and stop transmitting torque to the threaded connection.

Types of torque screwdrivers

Depending on the possibility to be adjusted, the tools can be divided into the following main categories:

• With a preset torque. These tools are preset to one or several values of this parameter. It doesn’t need adjustment before every use. Products of this type are indispensable for constant working with the same parameters of tightening.
• With adjustable torque. This parameter can be changed in accordance with peculiarities of a certain task.

One can find several versions of the tools of the second type in catalogues:

• Without the scale. In this case a torque measuring device is used for setting and reading the data; it should be bought separately.
• With the setup scale. It allows to set the limit value of torque, but at the same time there's no possibility to visually control current data.
• With the measuring scale. It allows to monitor the torque during tightening process.

Also the devices differ from one another by the size of the square (shank), acceptable torque values, length, weight, precision. The tools can have a straight handle or be gun-shaped.

Tips on torque screwdrivers use

Use the devices in combination with bits of the corresponding size. Note that it is reasonable to buy the tool in a set with heads. Thus, you get a tool for working with different fastenings. Moreover, buying of the ready set is often more profitable by price.

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