What is the primary use of a socket wrench?

The primary use of a socket wrench is to transmit turning force to the nut being removed or installed. This tool is specifically designed to apply torque to fasteners, typically nuts and bolts. The socket fits over the nut, allowing for a secure grip and efficient rotation. This design enables the user to exert considerable leverage, making it easier to tighten or loosen fasteners as part of mechanical assembly or disassembly processes.

Other options, such as tightening screws, cutting materials, or holding objects securely, do not define the primary function of a socket wrench. Although a socket wrench can be used on some types of screws if they have a corresponding socket, it is not its main purpose, which is focused on nuts and bolts. The cutting and holding functions refer to entirely different tools; for instance, a screwdriver is typically used for screws, cutting tools are meant for cutting materials, and clamps or vises are used to hold objects securely. Thus, the correct option encapsulates the essential purpose of a socket wrench in mechanical operations.