What is a Torque Wrench?

A torque wrench is a tool that is air powered and is often used by mechanics to tighten nuts and bolts that require a certain amount of torque. It is important to use an exact amount of torque pressure when tightening bolts to vital parts of your car such as the engine. A torque wrench comes in different styles and sizes.

• A torque wrench is an invaluable tool to the professional mechanic. 


• Torque is measured through a torque wrench and only tightens the bolt to the specified torque. 


• They come in many different wrench and socket sizes. 


• This wrench is used when it is very important to follow exact degrees of torque for the job. 


• Torque wrenches are commonly used on engine assemblies or other auto assemblies that contain moving parts. 


• These assemblies have exact specifications that must be followed to ensure optimal performance. 

There are three types of torque wrenches, they are:

Beam style - This type of torque wrench is the most economical choice, and therefore the most commonly used by mechanics. It is also thought to be the most reliable due to its ability to adjust back to zero with minute adjustments, should it become slightly off over time. A beam style torque wrench has a long handle with a socket on the end of it; a beam runs parallel to the handle. At the end of the beam there is a pointer that will show you what torque you are at so that you can control the amount of torque being applied. 

Click style - This version is a lot easier to use for the average Joe; although, it is a little more expensive than the beam style. A click style torque wrench looks like a long ratchet that has an adjuster dial on the end of it. This dial is designed to be set prior to use. Set the dial to the desired torque and then use to tighten your bolt. When the desired level is reached, the wrench will make a clicking sound to let you know that it has reached the desired level.

Electronic - These are the most expensive model of torque wrenches on the market; and the most accurate. This style has an LED display on the end of them that displays the amount of torque achieved. You can set it to the desired level as well; they are designed to slop off when the requested torque is achieved. The problem with this style is that they cannot handle much abuse and are known to go out of alignment over time.