How to Use a Torque Wrench Properly [Explained]

A torque wrench is a common tool widely used in the installation of equipment and vehicles. The purpose of using it is to tighten and secure fasteners without damaging them. You don’t need to guess when to stop tightening and worry about over- or under-tightening the fasteners.

If you are not sure how to use and set a torque wrench properly, walk through this blog. It is an easy thing, even for beginners. Believe you can have a basic understanding of how to use a torque wrench after reading this blog.

What is a Torque Wrench Used For

A torque wrench is a hand tool designed for applying a specific torque to a fastener, like a bolt or nut, and tightening it securely. Note: Never use a torque wrench to loosen fasteners. When the desired torque value has been reached, the wrench will indicate to you by making a clicking sound or generating vibration.

It can precisely control torque, preventing you from over-tightening or under-tightening fasteners. The torque wrench is indispensable when you want to work with a car, bicycle, or upgrade your cutterhead to a helical one for a DW735.

Tip: Torque is a rotational force, measured in inch-pound (in-lb), foot-pound (ft-lb), and newton-meter (Nm).

Common Types of Torque Wrenches

Click Torque Wrench

The click torque wrench is the most common type. It features a spring that can be adjusted by turning the handle to the correct preset torque. When you tighten the fastener to the preset torque, it will make a “click” sound to alert you. It has a ratcheting mechanism, used for both tightening and loosening.

Digital Torque Wrench

The digital torque wrench, also known as an electronic torque wrench, uses an electric sensor to measure the torque (the amount of twisting force applied). The torque value will show on a digital screen. When the required torque is reached, the wrench will beep to remind you to stop tightening, and some models will display a light.

It offers high precision, making it ideal for precise applications that require critical torque values. It features a memory stick that allows it to store readings, which can be accessed via a computer.

Beam Torque Wrench

The beam torque wrench has a simple design, using a pointer and a scale to display torque. It features two beams, one primary beam for applying torque and one pointer beam as an indicator. Therefore, you can calibrate it yourself, making sure the pointer is at 0 when not in use.

When you apply force to the handle, the primary beam moves while the pointer beam stays in place. Stop applying force immediately when the pointer reaches the desired torque on the scale.

T-Handle Preset Torque Wrench

Unlike other torque wrenches, it is pre-calibrated to a specific torque value, so you don't need to adjust it again. And it will be more accurate without error when setting the torque value. It will make a clicking sound to remind you when the torque value is reached.

How to Use a Torque Wrench

Loosen the lock at the end of the wrench handle by twisting it counterclockwise, and then you can set your wrench. Next, determine the torque value based on the fasteners by rotating the handle. Align the handle’s top edge with the horizontal line closest to the required torque value. Line up the vertical line with the required smaller value.

The total torque is determined by adding the two numbers. After setting the desired torque value, press the round button on the ratchet head of the wrench and install the socket. Finally, lock the wrench.

Now, we come to the steps of screwing the fastener or component. Firstly, use your hand to screw the nut or bolt on and keep turning it until you can’t rotate it anymore. Then, fit the torque wrench’s socket on the fastener and apply force to the handle to tighten the fastener.

When the torque wrench is reached, the wrench will remind you by making a clicking sound. At this point, you need to stop tightening. Otherwise, the fastener or the wrench.

After you finish tightening the fasteners, reset both scales to 0. Clean any dirt and rust from the ratchet head to prevent damaging the wrench. Also, remember to calibrate your wrench regularly, at least once a year.

Summary

Torque wrenches come in many different shapes and sizes. When choosing one, try to select one based on your actual needs. Proper use of them will save you time and effort when repairing and installing machines.

FindBuyTool offers a 1/4 inch drive torque wrench set covering a range of 2-14 Nm. The ratchet head is made of high-quality CR-V steel, with long-lasting service life. And the 72-tooth ratcheting results in highly efficient fastening. There is a 5% discount for newcomers, don’t miss it.

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FAQ About How to Use a Torque Wrench

#1. How do you use a torque wrench for beginners?

First, unlock your torque wrench and set it to a proper torque value for the vehicle or fastener. Fit the socket on the ratchet head and lock the wrench. Then, screw the fastener with your hand first, and tighten it with the wrench. Finally, stop twisting the wrench when it clicks, indicating the torque value has been reached.

#2. Do you hand-tighten before using a torque wrench?

Yes. Before using a torque wrench, it’s better to use your hand to tighten the fastener first. Because the torque wrench might destroy the fasteners if they are not perfectly aligned.

Also Read: Wrench vs Screwdriver: What's the Difference?