(Last Updated On: August 11, 2023)

When this question is mentioned, everyone must first think of using a wrench to tighten a bolt. But did you know there are other ways to tighten a bolt?

In this article, TorcStark will introduce various tools for tightening bolts. There is also one of the simplest methods.

Use a wrench to tighten the bolts

Wrenches are hand tools used to grip and turn bolts. They come in various sizes and types, including adjustable wrenches, combination wrenches, open-end wrenches, and box-end wrenches.

  1. Socket Wrenches: Socket wrenches, also known as ratchets, use sockets that fit over the bolt head or nut. They allow for quick and continuous turning without the need to reposition the tool.
  2. Torque Wrenches: Torque wrenches are specialized tools designed to apply a specific amount of torque (rotational force) to a bolt. They are crucial for accurate tightening, especially in applications where specific torque values are critical to the integrity of the connection.
  3. Impact Wrenches: Impact wrenches use a high-frequency rotational hammering motion to apply torque. They are commonly used in industries like automotive and construction, where rapid and high-torque tightening is required.
  4. Pneumatic (Air) Wrenches:Pneumatic wrenches, often called air wrenches or air guns, use compressed air to generate torque. They are commonly used in industrial settings due to their high torque output.
  5. Hydraulic Torque Wrenches:These wrenches use hydraulic pressure to generate torque. They are suitable for heavy-duty applications where extremely high torque values are needed.
  6. Electric Torque Wrenches:Electric torque wrenches use an electric motor to apply torque. They offer precise torque control and are commonly used in various industries.
  7. Manual Torque Multipliers: These tools amplify the force you apply to them manually, allowing you to achieve higher torque values than by hand.

Tightening bolts using the principle of tension

Tensioning tools are used to apply a specific tension to bolts in applications where bolt stretch is critical, such as in flange connections.

  1. Hydraulic bolt tensioner:It is mainly powered by a hydraulic pump to elongate the bolts, and then tighten the nuts with a wrench. Mainly used in industrial pipes, flanges, and other places.
  2. Electric Bolt Tensioners: These devices electrically tension bolts and are suitable for high-pressure vessels and connections where controlled bolt tension is required.
  3. Manual Bolt Tensioner: Similar to an electric bolt tensioner, but operated manually. Suitable for relatively small-scale applications.

Other non-standard tools to tighten bolts

The following tools should only be used for temporary solutions to tightening bolts. Torque accuracy cannot be guaranteed. If you require high torque accuracy, please choose professional tools.

  1. Hand screwdrivers: Although not as precise as spanners and torque wrenches, hand screwdrivers can be used to tighten small bolts in some cases.
  2. Nutrunners: Nutrunners can be used to tighten bolts, especially when other tools are not available.
  3. Manual rotary tool: similar to a torque wrench, but without precise torque control, it is suitable for some small and medium-sized fastening jobs.
  4. Special Custom Tooling: Depending on the specific application, custom tooling may be required to meet specific tightening needs.
  5. Mechanical Torque Amplifier: Similar to a manual torque multiplier, but uses mechanical principles to amplify the input force, resulting in greater torque.
  6. Universal joint wrench: This wrench allows torque to be applied at different angles and is useful in hard-to-reach places.
  7. Pliers or Clamps: Although not specifically designed for tightening bolts, pliers or clamps can be used to apply some torque in some emergency situations.

The easiest tool for tightening bolts😜

When you need to tighten a bolt but don’t have any tools around. Then fasten with your hands. As long as you don’t have any requirements for the torque of tightening the bolts, any tool can be replaced by hand, and it is simple and convenient.

Ps: Just kidding, don’t take it seriously. Accurate torque application is critical to ensuring a safe and reliable connection.

In the end

The above is a comprehensive introduction to bolt-tightening tools. Second, tool selection depends on factors such as required torque level, bolt size, available space and specific application. If you do not know the parameters of the bolts and the selection of the wrench, please consult relevant professionals. Of course, you are very welcome to contact us. TorcStark provides free technical consulting services.