How to Remove Lag Bolts


A lag bolt is used in wood construction to assemble structures such as decking, bridges and beams. A lag bolt does not have a nut and is actually a screw. Lag bolts, indeed, are sometimes called lag screws. The advantage of a lag bolt is the amount of force it can create and the sharp point at its end, which make it ideal for connecting wood pieces. The key to loosening a lag bolt is to not crack the wood material around the bolt.

Things You'll Need

  • Open-end wrench or box wrench Ratchet Screwdriver
  • Inspect the lag bolt head to determine the correct tool to use to remove it. Some may take a open-end wrench or a box wrench, a ratchet or a screwdriver. Using the right tool will make the job easier and will reduce the chance that damage will occur to the material the bolt is fastened through.

  • Apply the tool to the bolt. Make sure it is snugly affixed to the bolt. If it is not, you run the risk of stripping the bolt.

  • Turn the bolt counterclockwise slightly to determine the amount of torque you'll need to remove the lag bolt. Slowly increase pressure on the wrench or other tool until the bolt begins to turn, rather than suddenly exert great force on the tool, to get an idea of how much force you'll have to use to turn the bolt out. You do not want to use too much torque, or you may damage the material around the bolt.

  • Continue to turn the bolt to the left (counterclockwise) until it is out of the material.

Related Searches


Promoted By Zergnet


You May Also Like

  • Lag Screw Information

    Lag screws are designed for use in construction. They are built specifically to hold large amounts of weight, and are used primarily...

  • Wood Screw Vs. Lag Bolt

    Wood screws and lag bolts have a lot in common. In fact, a lag bolt is often, and more accurately, called a...

  • How to Remove a Bolt From Concrete

    Removing a bolt from concrete involves a lot of trial and effort in order to get the metal object to come loose....

  • How to Use Lag Bolts

    Lag bolts -- also called lag screws -- have been in use for many years to join larger pieces of lumber. Simplicity...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!