A socket wrench is a wrench with interchangeable heads called sockets that attach to a fitting on the wrench, allowing it to turn different sized bolts and other fasteners. The most common form is a hand tool popularly called a ratchet consisting of a handle with a ratcheting mechanism built in, so it can be turned using a back-and-forth motion in cramped spaces. A socket has a cup-shaped fitting with a recess that grips the head of a bolt. The socket snaps onto a male fitting on the handle. The handle supplies the mechanical advantage to provide the torque to turn the socket. The wrench usually comes in a socket set with many sockets to fit the heads of different-sized bolts and other fasteners. The advantage of a socket wrench is that, instead of a separate wrench for each of the many different bolt heads used in modern machinery, only a separate socket is needed, saving space.
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Some articles on socket wrench:
... A breaker bar is a long non-ratcheting bar that is used with socket wrench style sockets ... allows the same amount of force to generate significantly more torque than a standard length socket wrench ... damage to the ratcheting mechanism of a socket wrench ...
... socket wrenches Extensions, sometimes called "extender arms", attach to a socket on one end and a ratchet on the other end of the extension ... These "extend" the length of the socket and allow access to nuts or bolts that are difficult to reach ... Wobble extensions have their socket attachment ends ground to allow the socket-extension interface to bend up to about 15 degrees ...
... American name British name Description Group box-end wrench ring spanner Widely regarded as "the king of wrenches," this is a one-piece wrench with ... common spark plug wrench box spanner / tube spanner A tube with six-sided sockets on both ends ... common combination wrench combination spanner A double-ended tool with one end being like an open-end wrench or open-ended spanner, and the other end being like a box-end wrench or ring ...
Famous quotes containing the word wrench:
“I believe we are still so innocent. The species are still so innocent that a person who is apt to be murdered believes that the murderer, just before he puts the final wrench on his throat, will have enough compassion to give him one sweet cup of water.”
—Maya Angelou (b. 1928)