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How to Remove Carriage Bolts: 2 Easy to Follow Methods

Discovered some carriage bolts stuck to your bench and they won’t bunch? The frustration is understandable. Although they’re pretty useful, they can be a pain when you’re trying to remove them.

How to remove carriage bolts?

Make use of a socket wrench and the appropriate sized socket. If you’re unsure of the socket size, insert and withdraw it over the nut. Push your fingers on the carriage bolt’s head. The force from your finger will keep the bolt from dropping out of the groove.

Looking to know more about carriage bolts? Then continue to read on!

2 Methods to Remove Carriage Bolt

We’ve covered two of the easiest methods that we could find to remove carriage bolts. After going through this content, you may consider using different screws for your next project.

Method #1

For the first method, we’ll be using a Socket Wrench and Set to remove Carriage Bolts.

Necessary Tools

  • A set of socket
  • Socket wrench
  • Hammer
  • Center punch

Don’t have a socket set at home, then take a look at some of the ones that we use ourselves:

DEWALT Socket SetIt has identification on sockets with hard stamped markings
Neiko Drive Master Impact Socket SetSturdy and strong case features socket size labels for organized storage

Now that we’ve covered all the tools you will need, we’ll be going over the steps.

Step #1 Using Socket Wrench

Use a socket wrench with the proper fitting socket. If you don’t know the socket size, you’ll have to swap out sockets constantly. You’ll have to keep doing this until you discover one that works.

Step #2 Adjust the Bolt Head

With your thumb, press on the carriage bolt’s tip. Then, using the socket wrench, begin rotating the bolt outward. Your thumb’s force will prevent the bolt from falling out of the slot. It will happen as the nut is released.

Permit the bolt head to fall out of the shaft before removing the nut. The bolt will revolve in the slot if you do this. This will render removal harder. Pull the nut first from the bolt’s threads fully. If there is a fastener, remove it as well.

Step #3 Use a Mallet

To get the bolt out from the opening, hit the head with a mallet. Pull the carriage bolt out of the socket with your fingers by tugging on its neck. If you can’t get the bolt to move after yanking on it, you’ll have to try different things.

So, place a long, narrow middle punch into the top flange of the bolt’s socket. Then begin striking the fist with the mallet. Strike the punch over and over until the bolt comes out.

Method #2 Penetrating Oil

If the bolt is stuck and won’t budge at all, then you can use penetrating oil. It will act as a lubricant to loosen the bolt.

Necessary Tools

  • Penetrating oil
  • Set of socket wrench
  • Box-end wrenches
  • Hammer
  • Hacksaw
  • Oscillating multitool
  • Locking pliers
  • Reciprocating saw


  1. The first step is to apply penetrating oil used in wood finishing, towards the bolt. Let the penetrating oil sit on the troubled bolt for 20-30 minutes. Now, use the socket wrench to release the bolt.
  2. If the bolt is attached but not moving, hit the head repeatedly. It is critical not to harm the hex head’s form. If you suspect the tool is moving, try a different oil coating.
  3. Pour penetrating oil on the bolt head or nut if it is corroded and can’t just move. Then, using the appropriate size wrench, remove it. Again, is the head or nut excessively corroded? Then the wrench may be unable to contact the form and fall.
  4. Using a couple of locking pliers, tighten the clamp and release the head or nut.

How to Remove a Broken Bolt

If you discover broken bolts when removing rotten plywood you can follow this method. There are different removal options. But here I am showing the best method to remove it.

Necessary Tools

  1. Drill
  2. Drill bits
  3. Machine oil
  4. Center punch
  5. Hammer
  6. Bolt extractor


  1. Choose a power drill that is less in size in comparison to the bolt.
  2. Create a beginning in the middle of the bolt with a core punch. Then, employing engine oil, gradually delve deeper into the bolt. If you break the threads of the component, it will be difficult to put a new bolt.
  3. A bolt extractor is a more convenient means to retrieve a broken bolt. Ensure that it looks like a coarsely threaded screw.
  4. The screws are available in a variety of sizes and also have left-handed threading. To utilize one, you must first initiate cutting out the bolt. You just need to dig deeper further to allow the bolt extractor to grip the bolt.
  5. Apply a small amount of penetrating oil to the bolt. Bang the extractor into the hole with a mallet until it is securely set. The extractor should then be turned 180° with a pair of tweezers or a wrench. The bolt should now back out.

If you follow all of the steps, you should easily be able to remove the broken bolt. You are most likely to discover rusted bolts when installing wood floors.


Question: What is the easiest way to stop a carriage bolt from spinning?

Answer: One possibility is to remove or break the nut. You can often grab the bolt that extends through to the nut. Alternatively, shave a needle slot into the bolt’s head. Alternatively, solder a nut to the bolt’s head.

Question: How do you get a rusted bolt out without using heat?

Answer: Rust can be dissolved with hydrogen peroxide. You can spray hydrogen peroxide to fasteners and then allow it to sit. This is another efficient approach for removing rust and loosening nuts and bolts. Scrubbing it with a firm brush can help you remove any remaining rust from the nuts and bolts.

Question: What is the distinction between a lag and a carriage bolt?

Answer: A lag bolt seems to have a curved head with threads that span about 1⁄2 its height. A carriage bolt has a rectangular head with threads that extend about three-quarters of the way down the bolt. 


Has the article on how to remove carriage bolts matched your expectations? 

I hope it did. I would suggest following the first method. Here you need less tools and doing it will be easier. 

Have a good day!