You would need the torque wrenche while dealing with nuts, bolts and fastening screws, measuring the torque to make things easier or simpler for you. There are many different types of torque wrenches based on their dimensions, capacity and applications. For example, you will come across ratchet head models where a ratchet is provided near the head of the wrench allowing you to operate in a squeezed out or tight area. Then there are the standard wrenches and the industrial wrenches. The production wrenches for example, are used with preset values of the torque which cannot be altered at all, thus saving time wasted in changing or setting the torque for the applications. You will also come across open jaw fixed type wrenches which are used for torqueing bolts in limited vertical clearance.

When you are looking at torque wrenches you can differentiate between them based on their range. For example, some models can give you 2 – 10 lb.ft., while some can provide a much bigger range between 1000 and 2000. Similarly, there are other units too in which you can check out the same range as well. You will also need to know about the square drive which varies between 3/8 inch to 1 inch with the head width which is usually between 33 – 85mm including the bit. The weight of the torque wrenche will also vary as well. There are those models which are as light as 0.6kgs approximately and those which are heavier than 20 kilos. Thus, when you are looking for these wrenches you need to figure out the exact capacity that you require and the wrench that you are capable of operating.

There are other classifications of the torque wrenches as well such as the click type, deflecting beam type, the beam type and the electronic torque type. There are some which are programmable too. The click type wrench is used for accuracy through accurate calibrations while the beam type models are used in automotive field although they cannot be very accurate. Whether it is in power plants, oil and gas industry, heavy engineering mechanisms or automotive industry, the torque wrenche proves to be extremely useful when you have to precisely tighten the bolts and the nuts. They have to meet specific requirements as well before you pick them up.

Some torque wrenches can be used in both horizontal and vertical positions. Since it is a precision instrument, it is important that you understand the specifications of the instrument and handle it with professional care. For example, a torque wrenche is generally not used except for final assembly and has to be used methodically without too much jerking. Moreover, when wrenches are dropped they might lose their calibration, which means they have to be used carefully. How you hold the torque or store it is equally important. A lot also depends on following the manufacturer’s settings and instructions. When you are measuring the torque on the fastener, you have to be well aware of the units, whether it is foot-pound or Newton-meter.
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