Locking jaw pliers come in various sizes, so measure the width of the nut and choose a pair of pliers that have a larger-sized jaw capacity listed on the packaging. Ensure you have pliers with curved jaws instead of flat jaws. The curves will clamp onto the rounded nut easier. For larger sized nuts, you may need to use a pipe wrench. Simply tighten the jaws of the wrench around the nut and turn it counter-clockwise. Be aware that you may end up stripping the grooves on the nut, leaving marks and damaging the finish on it when using pliers. [2] X Expert Source Patrick JohnsHome Improvement Specialist Expert Interview. 26 October 2021.

If you have trouble locking the pliers, loosen the bolt slightly and try again.

Try using a lubricant like WD-40 if the nut won’t turn. Spray the nut and the threading so it is entirely lubricated.

Once the nut is loosened, you should be able to twist it by hand to remove it.

Wear safety glasses so you don’t get any metal shavings in your eye. Hold on to both sides of the file to get better leverage. Wear work gloves so you don’t hurt your hands. Move the file in one direction only. Moving it back and forth will only wear down the filing edge faster and make it more difficult to work with.

Use your non-dominant hand to support the file from the bottom while working on the opposite side of the nut.

If the wrench still slips, try filing the edge more until it has a firm grip. Stick the blade of a screwdriver in between the wrench and the nut to use as leverage. [10] X Research source

Propane torches can be purchased at your local hardware store. Wear safety glasses and work gloves to protect yourself from the flame. A multipurpose safety lighter will work in a pinch if you don’t have a striker.

Don’t use the torch if the nut is near any plastic or flammable materials. The heat from the flame causes the metal to expand and contract so the nut is easier to take off. Keep a fire extinguisher nearby in case there is an accident.

Wear sturdy work gloves to protect your hands if the heat transfers to the wrench or pliers.

You may hear hissing or a metal clanking noise once you put it in the water, but this is a normal reaction. Don’t remove the nut fully unless you have a pot of water near you.

Don’t test the temperature of the nut with your bare hands. Wear thick work gloves.