Which tool is commonly used to tighten or loosen nuts and bolts?

A socket wrench is a commonly used tool for tightening or loosening nuts and bolts due to its design that allows for efficient work on fasteners. This tool typically features a ratchet mechanism, which lets the user turn nuts and bolts without needing to reposition the tool after each turn, enhancing speed and ease in various applications. The socket itself fits over the fastener's head, providing a secure grip that distributes force evenly, reducing the chance of stripping the nut or bolt.

In contrast, while a multimeter is utilized for electrical measurements, a hacksaw is designed for cutting materials, and a measuring tape is used for measuring distances or dimensions, none of these tools serve the purpose of applying torque to fasteners like a socket wrench does. Understanding the specific functionalities of these tools is crucial for efficient mechanical work, especially in contexts where precision and reliability are essential.