A socket wrench is a part of a system of wrenches that has a socket attached at one end, usually used to turn a fastener. This allows a single handle to turn nuts and bolts of many different sizes and shapes, saving cost and storage space. Typically the engagement between the two components is a square peg on the handle with a small ball detent to hold the square socket of the wrench securely.
A socket is required to use a torque wrench. After using a socket wrench to tighten bolts, a torque wrench is used to precisely tighten it and meet the specific settings.
As a dial torque wrench is turned on a bolt, a pointer tells the user how much torque is being applied to the bolt. There are also digital torque wrenches, which utilize a digital display that gives the torque reading. A torque wrench is a special version of the socket wrench that has means to set or limit a specific amount of torque measured in ft-pounds or newton meters to the bolt fastening. When it is used properly, that could help you calculate the torque amount while fastening using the wrench.