The most important feature of the torque wrench is: it can set the torque and the torque is adjustable.

Application of torque wrench The torque wrench is to fasten the bolts.
The high-strength bolts can be divided into two types: torsion shear type and large hexagonal type.
The national standard torsion shear type high strength bolts are M16, M20, M22 and M24.
There are also two kinds of non-national standard M27 and M30.
National standard large hexagonal high strength bolts are M16, M20, M22, M24, M27, M30 and several others.

Generally, for the fastening of high strength bolts, the initial tightening and then the final tightening are required, and each step needs to have strict torque requirements.

The initial tightening and final tightening of large hexagonal high-strength bolts must use constant torque wrenches.
The use of torque wrench The torque wrench can be used for both initial and final tightening, and it is used to adjust the torque first and then tighten the bolts.

Features of electric torque wrench: easy to operate, time and effort saving, adjustable torque.