What should be avoided when using a wrench on frozen nuts?

When working with frozen nuts, it is crucial to avoid the application of excessive force. This situation typically arises when nuts become rusted or corroded, making them difficult to turn. Applying excessive force may lead to several issues, such as stripping the nut or damaging the fastener, which can make it even more challenging to extract. In worst-case scenarios, it might result in the wrench slipping, causing injury or damage to surrounding components.

Instead of excessive force, it's advisable to use appropriate tools and techniques. For instance, employing a breaker bar provides more leverage and can help break the seal of the frozen nut without the risk of damaging it, while a socket wrench effectively fits on the surface area to provide better grip. Using the open end of a wrench can also lead to rounding off the corners of the nut since it provides a less stable fit than a socket. Thus, avoiding the application of excessive force is key to successfully loosening frozen nuts without causing further problems.