Types of Torque Wrenches and how buy the right one

Posted by Perry Harper on February 25th, 2021

The torque wrench is a tool used to apply the correct tightening on threaded fasteners. For example, for fastening wheels on cars and bicycles, parts of industrial machines, electronic installations and various other situations.

For the safe use of any equipment, the fixings depend on a correct tightening to prevent parts from loosening, the threads to dust off or that there are possible leaks due to spacing.

Types of torque wrench

Snap torque wrench

The snap torque wrench is a tool suitable for use in production line torques in factories or repeated torque - such as when fixing the wheels on a vehicle. This model is called a snap because it clicks when the torque reaches the specified size. About torque adjustment, it is carried out at the end of the cable, through an articulated rod. Permitted error is approximately 3%, according to ISO 6789: 2003.

Clock torque wrench

In addition to the application of torques, the clock torque meter is indicated for checking torques in conference laboratories and in quality control. It is also indicated for use in places of difficult access, which can hinder the direct reading of the torque. The “drag pointer” or “memory pointer” indicates the maximum value of the applied torque and can be used for clockwise and counterclockwise torques. You may get more details on Torque Wrenches  by visiting geartoolsbuddy.com site.

Dipstick torque wrench

The torque indication on the wrench torque wrench works by flexing the rod, which points to the torque applied on the graduated scale that comes with the tool. These models are best suited for light duty and do not require high precision. Permitted error is up to 6% according to ISO 6789: 2003.

Digital torque wrench

The digital torque wrench - torque cube model - is small in size and, to use it, it is necessary to use a “T” wrench on one side and the socket in the desired gauge in the fitting square. Permitted error is 3% according to the Standard.

Axial torque wrench

The axial torque wrench is a tool for small torques, generally used in electronic assembly processes and plastic objects, since the sensitivity of the tightness is very important to maintain the good condition of the parts. Permitted error is up to 6% according to ISO 6789: 2003.

Main units of measurement used in torque wrenches

Nm : Newton x meter (metric system);
Lbf.foot : pound-force x foot (imperial system);
Kgf.m : kilogram-force x meter.

How to choose the right torque wrench to buy

When in doubt which type of torque wrench is best for you, we can help you in the comments or by contacting us on our virtual store .

Below, we ask the most important questions to make a referral, remembering that the more data is provided, the greater the certainty of the correct referral !

* What is the torque to be used? Example: 100 Nm or 50 Lbf.ft.
* Which unit to use? Example: Nm or kgf.m.
* What type of torque wrench do you need? Example: Snap or watch.
* For what use is it intended? Example: production or laboratory.