What is the simplest way to free a stuck nut on a locking carabiner?

The simplest way to free a stuck nut on a locking carabiner is to try to pull them apart. This method works by applying direct force in the manner intended for the carabiner's use, which often involves separating the two sides if they have become stuck due to pressure or debris.

Using this approach relies on the mechanical nature of the carabiner, which is designed to open and close smoothly under normal circumstances. If the nut is stuck, gently and firmly pulling can help realign the mechanism, allowing it to unlock as it was intended.

Other options, such as twisting or using a lubricant, might not address the immediate issue effectively and could risk damaging the carabiner. Dropping it from a height is impractical and unsafe, as it could lead to further entrapment or failure of the equipment due to mechanical stress, compromising safety and reliability.