What are the types of socket wrench?

A socket wrench is a mechanical device used to loosen or tighten fasteners. There are several types of sockets. The different types are determined by the application. For example, a flex socket is hinged and provides greater flexibility in reaching a fastener from a straight on approach. Another type is an impact socket, which provides more torque than an ordinary driver.

Sockets are sized to match the dimensions of the fastener. The internal walls of the socket allow for more torque to be applied to the fastener, as well as lessening the chances that the fastener will round. They are available in both metric and imperial sizes. It's important to choose a socket with a quick release button on the ratchet head.

Hex sockets are the most common type of socket. These sockets fit over the head of hexagonal bolts. However, there are bi-hex sockets, which are suited to fit square fasteners. This is useful for working in confined spaces. Impact sockets are made of chrome molybdenum steel and are designed to provide a higher degree of torque than an ordinary driver. They also tend to be more durable, especially for applications that involve heavy duty work.

Non-sparking sockets are made of alternative nonferrous materials, which prevent the generation of sparks. They are typically finished in black oxide. They are best for use with impact tools.

A ratcheting socket wrench is the most common type of socket wrench. Ratchets require very little set-up before use. In fact, a few common hand ratchets are equipped with a quick release button for rapid socket release. Other popular types include manual ratchets, power ratchets, and thumb ratchets.