What type of tools is typically used for tightening and loosening nuts and bolts?

Wrenches are specifically designed for tightening and loosening nuts and bolts due to their shape and functionality. They come in various types, such as open-end, box-end, and adjustable wrenches, each suited for different sizes and types of fasteners. The design of a wrench allows for a secure grip on the fastener, minimizing the risk of slipping and stripping the nut or bolt when torque is applied.

The other tools mentioned serve different purposes. Screwdrivers are used primarily for turning screws, and while they can sometimes be used on nuts if the slot fits, they are not ideal for that task. Files are used for smoothing or shaping materials and have no capability for applying torque on fasteners. Pliers can grip and turn, but they lack the specific design required for securely tightening or loosening nuts and bolts, which is why wrenches are the preferred tool for that job.