How to Loosen a Nut on Spinning Bolt

1. Apply penetrating oil: Spray some penetrating oil, such as WD-40 or a similar product, onto the threads of the bolt and the nut. Let it sit for a few minutes to allow the oil to work.

2. Use a wrench: Try to hold the bolt steady with one wrench while using another wrench to turn the nut. Apply steady, even pressure to turn the nut counterclockwise.

3. Use a longer wrench: If you can't get enough leverage with your current wrench, use a longer one to increase your turning power.

4. Use a cheater bar: Attach a cheater bar to the end of the wrench to increase your leverage even more.

5. Apply heat: If the nut is particularly stubborn, you can apply heat to it with a heat gun or torch. Be sure not to overheat the bolt, as this can damage the threads.

6. Use vice grips: If you're still unable to loosen the nut, you can try using vice grips (locking pliers) to grip the bolt and prevent it from spinning. Then use a wrench to turn the nut.

7. Use a breaker bar: A breaker bar is a heavy-duty wrench with a long handle that can provide you with a lot of torque to loosen a stubborn nut.

When attempting to loosen a spinning nut, it's important to apply steady, even pressure rather than trying to force the nut off quickly. If you're still unable to loosen the nut, it may be necessary to take the part to a professional for further assistance.