Torque Wrench Buying Guide: 7 Factors To Consider Before Buying A Torque Wrench

Torque Wrench Buying Guide 7 Factors To Consider Before Buying A Torque Wrench

Last Updated on February 29, 2024 by Ossian Muscad

When it comes to tightening bolts or screws, a torque wrench is the tool of choice for many professionals. This is because a torque wrench allows you to tighten bolts to the manufacturer’s specifications, ensuring that they are not over- or under-tightened. Unfortunately, with so many torque wrenches on the market, it can be difficult to determine which one is best suited for your needs. This article will share a torque wrench buying guide with seven factors you should consider before purchasing. That way, you can be sure to purchase the torque wrench that is best suited for your needs.

 

What is a Torque Wrench?

A torque wrench is an essential tool designed to precisely apply a specific amount of torque to a fastener, such as a nut or bolt. This precision ensures the fastener is neither too tight nor too loose, preserving the integrity of the assembly and preventing damage. The torque applied is typically measured in foot pounds (ft-lbs) in the United States or in Newton meters (Nm) in countries using the metric system.

There are primarily two types of torque wrenches found in the marketplace: adjustable and preset. Adjustable torque wrenches offer the flexibility of setting the torque value according to the task at hand, making them versatile for a wide range of applications. On the other hand, preset torque wrenches are configured with a fixed torque setting, which is an ideal choice for repetitive tasks requiring the same torque value, reducing the risk of incorrect setting adjustments.

 

Why Use a Torque Wrench?

The importance of using a torque wrench in tasks where a specific level of torque is critical cannot be overstated. This is particularly true when assembling machinery or components where precision is paramount. Applying too much or too little torque can lead to a myriad of problems, including stripped threads, which compromise the integrity of the bolted joint, or a connection that is either too loose to function properly or excessively tight, risking damage to the components.

Following the manufacturer’s instructions for the use of a torque wrench ensures the correct application of torque, thereby preventing these issues. Additionally, to maintain the tool’s accuracy and reliability, torque wrenches require regular calibration. This adherence to maintenance and proper usage ensures that the torque wrench can provide its essential benefits over long service life, making it an indispensable tool in ensuring mechanical reliability and safety in numerous applications.

 

7 Factors to Consider Before Buying a Torque Wrench

Before you venture into the market for a torque wrench, it’s essential to arm yourself with the knowledge of what to look for. The right torque wrench will not only fit your project’s specific requirements but also ensure longevity and precision in your work. Understanding these seven key factors will guide you in making an informed decision, ensuring you choose a tool that enhances your productivity and work quality:

Brand

Like every other consumer, you have probably developed a level of trust (or mistrust) for certain brands. However, when it comes to torque wrenches, there are many reputable brands on the market. So, do some research and read reviews to get a sense of which brands are most trusted by professionals. Some notable brands include:

  1. CDI: CDI is a well-recognized name in the torque wrench sector, offering a vast array of click-type torque wrenches that stand out for their accuracy, durability, and affordability. These wrenches are designed to meet the needs of both professional and amateur mechanics, ensuring that every bolt is tightened to the perfect specification.
  2. Tekton: Tekton has quickly made a name for itself by providing excellent value with its high-quality torque wrenches at competitive prices. Their wrenches are praised for their robust construction and ease of use, making them a go-to choice for DIY enthusiasts and professionals alike who are looking for reliable tools without breaking the bank.
  3. ACDelco: Specializing in high-precision torque wrenches, ACDelco offers innovative solutions, including beam-style wrenches, which are celebrated for their durability and ease of use. These wrenches are designed with the professional in mind, offering the precision needed in a wide array of applications.
  4. Snap-on: Positioned at the premium end of the market, Snap-on is synonymous with excellence in the tool industry. Their high-performance torque wrenches are favored by professional mechanics worldwide for their unparalleled accuracy, durability, and advanced features that cater to the most demanding tasks.
  5. Precision Instruments: This brand specializes in manufacturing high-precision torque wrenches, including beam-style wrenches known for their durability and ease of use. Precision Instruments sets itself apart with its commitment to accuracy and reliability, making it a favored choice for those who require the utmost precision in their work.

Types

When shopping for a torque wrench, you will notice three types available in the market: bean type, digital wrench, and an interchangeable head torque wrench. To get the most out of the torque wrench you select, it’s essential to know which type best suits your application. The following outlines each type’s unique benefits:

  • Bean-type torque wrench is the oldest and simplest type, offering ease of use. However, it is less accurate compared to digital or interchangeable torque wrenches.
  • The digital torque wrench utilizes sensors for precise torque measurement. While more accurate than bean-type wrenches, they tend to be pricier. These wrenches emit a distinct notification sound upon reaching the correct torque. Some models even allow data storage for future reference.
  • The interchangeable head torque wrench stands out as the most costly option, yet it boasts unparalleled accuracy. This type of torque wrench employs electricity to heat the torque-applying element, ensuring precise torque application.

Size

The torque wrench size is important because you need to be able to grip the wrench in your hand comfortably. It won’t be easy to use if the torque wrench is too large or too small. Some torque wrenches come in multiple sizes, which is a good option if you plan on using the wrench for different applications. Currently, there are four common sizes of square head range, all of which correspond to different functions and torque ranges.

  • 1/4-inch Drive: ideal for small bolts and nuts found in bicycles, garden equipment, and motorcycles. This size typically delivers between 4 and 21 ft-lb of torque, making it perfect for precise tasks requiring lower torque levels.
  • 3/8-inch Drive: a widely used torque size in automobiles, including light trucks, passenger vehicles, and cars. With a torque range of 15 to 75 ft-lb, it offers versatility for various automotive applications. The 3/8-inch Drive stands out as a common choice due to its ability to handle a broad spectrum of functions effectively.
  • 1/2-inch Drive: designed for larger bolts and nuts like suspensions and engine mounts, providing the necessary torque strength for heavy-duty applications.
  • 3/4-inch Drive: reserved for specialized uses like working on tractor trailers and cargo aircraft, where high torque requirements are essential for specific tasks.

Price

The price of the torque wrench is obviously an important factor to consider. Keep in mind that you get what you pay. Cheap torque wrenches are likely to be less accurate and less durable than more expensive wrenches. If you plan on using the torque wrench regularly, it is worth investing in a high-quality wrench. However, in any case, it’s always a good idea to go for expensive yet high-quality torque wrenches since they provide the most accurate measurements. Ultimately, it’s essential to strike a balance between quality and price, ensuring that you get the best value for your money.  

The average price range for a torque wrench is between $20 and $300, depending on the type, size, and brand. Keep in mind that investing in a high-quality torque wrench will save you money in the long run by avoiding costly mistakes caused by inaccurate measurements.

Functionality

When shopping for a torque wrench, you need to consider what you will use it for. Torque wrenches are available in an extensive range of torque capacities and different functions. Some torque wrenches are designed for specific tasks like torquing lug nuts or engine bolts. Others offer more versatility and can be used for a variety of applications. If you know exactly what you will use the torque wrench for, it will be easier to find the right one. However, if you are unsure, opting for a more versatile wrench is best.

Accuracy and Calibration

When it comes to torque wrenches, accuracy is key. After all, you are using this tool to apply a specific amount of torque to a bolt or nut. If the wrench is not accurate, it could lead to serious problems.

There are two main ways to ensure accuracy: calibration and certification. Certification means that the torque wrench has been tested and meets certain standards. Calibration, on the other hand, is adjusting the wrench to achieve accuracy.

Most torque wrenches need to be calibrated regularly, usually once a year. However, some wrenches come with a built-in calibration mechanism. These wrenches are more expensive but also more accurate and easier to use.

Materials

Finally, you must consider the materials used to make the torque wrench. The materials used determine the durability, strength, and overall quality of the wrench. Most high-quality torque wrenches are made from durable materials such as steel or alloy. These materials can withstand heavy use and resist wear and tear over time.

Some brands also offer specialized coatings on their wrenches to enhance durability and prevent corrosion. For example, some models have a chrome finish to protect against rust and other damaging elements. Additionally, some wrenches come with soft-grip handles for added comfort and control during use.

 

Frequently Asked Questions (FAQs)

Q1: How often should I recalibrate my torque wrench?

Most manufacturers recommend recalibrating your torque wrench every 12 months or after 5,000 cycles, whichever comes first. However, if you use your torque wrench very frequently or in very demanding conditions, you might need to recalibrate it more often.

Q2: Can I use a torque wrench as a normal wrench?

It’s not recommended to use a torque wrench as a regular wrench. While it might work, doing so can affect its calibration and accuracy over time. Torque wrenches are precision tools designed specifically for applying a certain amount of force, not for general loosening or tightening tasks.

Q3: Is there any way to verify the accuracy of my torque wrench at home?

While professional calibration is recommended for accuracy, you can perform a rough check at home using a vise and a known weight. Secure your torque wrench (set at a specific torque) horizontally in a vise, and hang a weight at a known distance from the Drive. If the wrench clicks (for click-type wrenches) at the expected point, it’s relatively accurate. However, this method isn’t as precise as professional calibration.

Q4: Are digital torque wrenches more accurate than manual ones?

Digital torque wrenches often offer higher accuracy and convenience features, such as digital readouts and the ability to store settings. However, both digital and manual torque wrenches can be highly accurate when properly calibrated and used.

Q5: How do I know if my torque wrench is out of calibration?

Signs that your torque wrench may be out of calibration include inconsistent torque application (either too loose or too tight than expected), the tool dropping or being subject to extreme temperatures, and visible wear and tear. If in doubt, it’s best to have it professionally recalibrated.

Q6: Can environmental factors affect my torque wrench accuracy?

Yes, environmental factors such as extreme temperatures, humidity, dust, and corrosive chemicals can affect the accuracy and lifespan of a torque wrench. Storage in a controlled environment and regular cleaning are recommended to preserve its accuracy and durability.

 

Measure Torque with DATAMYTE

DATAMYTE, a recognized industry leader in providing robust data collection and low-code quality management solutions, offers a range of torque products designed to enhance accuracy and efficiency in various manufacturing environments.

LightStar Torque Wrench

This precise torque-measuring instrument is designed to eliminate false readings that are difficult to detect. The LightStar Torque Wrench, series technology sensor, ensures that the operator can pull at any point on the wrench and will receive an accurate measurement.

DataMyte Torque Solution

This solution provides real-time reporting and torque data collection to improve and monitor torque continuously. It’s a comprehensive system for managing all aspects of torque control, from data collection to analysis and reporting.

New Generation of Digital Torque Wrenches

DATAMYTE has introduced a new generation of their LightStar™ Carbon Fiber Torque Wrench. These digital torque wrenches offer improved performance and accuracy, making them ideal for demanding industrial applications.

These products are part of DATAMYTE’s commitment to providing quality management solutions that enhance actionable results based on collected production data. They are designed to ensure consistent, reliable torque application, improving the quality and reliability of assembled products. Book a demo with us now to see how we can help you achieve your torque accuracy goals.

 

Conclusion

Buying a Torque Wrench shouldn’t have to be complicated. But that doesn’t mean shoppers should approach the decision lightly. Finding the right torque wrench involves understanding your specific needs, including the range of torque you’ll work within, the level of accuracy required for your tasks, and the environmental conditions in which the tool will be used.

Considering these aspects alongside the frequency of use can guide you to the ideal choice, whether it be a digital model known for precision or a durable manual wrench for regular use. Regular calibration and proper care are crucial to maintaining the tool’s accuracy and extending its lifespan. In essence, selecting the right torque wrench not only contributes to the quality of your work but also ensures safety and efficiency in your operations.

 

 

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