Removing a broken or rusted lag screw is a bit tricky and sometimes even a headache. Rest assured; the solutions exist also if they are sometimes a little challenging to apply.

What to do to extract a rusty lag screw?

We offer two methods to get there.

Method 1: Using a bolt extractor kit

It is a handy tool for removing rusty screws. It contains several sockets of different diameters. Choose one that perfectly matches the diameter of the lag screw head. Secure the socket and gently tap with a mallet so as not to damage the head and make the task even more difficult. Once you are sure that there is a perfect grip between the socket and the head of the lag screw, use a suitable wrench. Turn the socket counterclockwise to extract the lag screw. Tip: Before using the extractor, remember to clean the rusty head a little to make the job easier.

Method 2: Penetrating Oil

Also called penetrating oil for rusted screws, it is used to facilitate the unscrewing of rusted and stuck fastening tools. It is not very expensive, and you can easily find it in hardware and specialty stores. This low viscosity oil can get into the smallest spaces. It will lubricate the lag screw rod and make it more flexible. Then use a pipe or eye wrench to unscrew the lag screw. Tip: Heating the lag screw makes it easier for the oil to penetrate.

 How Do I Remove A Broken Or Rusted Lag Screw? Tips And Advice 

How do I remove a broken lag screw?

It can happen to anyone. The lag screw head breaks due to poor quality or being too tight. In this case, you can resort to one of the following methods depending on the degree of complication of the situation. You can try heating the screw to soften the dowel and give yourself some leeway to introduce a tool that lets you pop the rod out a bit. If you can do this, use pliers to extract the screw. You can also try to make a small groove on the diameter of the screw to be able to use a screwdriver. When all that doesn’t work, you have one last solution, beneficial but which requires the use of several tools. You will start by drilling through the stiff rod using a suitable puncher and bit. Then you introduce a stud extractor to grip the screw. Use a left-hand turn to turn the extractor to remove the broken lag screw.

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