Which tool is typically used for tightening or loosening nuts and bolts?

The tool most commonly used for tightening or loosening nuts and bolts is the wrench. Wrenches come in various types and sizes, designed specifically to fit the heads of nuts and bolts securely. They provide a strong grip and leverage, allowing for the application of sufficient torque to either tighten or loosen fasteners without damaging them. This makes them essential in maintenance and repair tasks where nuts and bolts are frequently involved.

While the other tools mentioned have their own specific functions, they are not optimized for this particular task. Hacksaws are primarily used for cutting materials, pliers are generally used for gripping and bending, and drills are intended for creating holes or driving screws but aren’t well-suited for manipulating nuts and bolts directly. Thus, the wrench stands out as the appropriate choice for this application.