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Achain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curvedincompression but linear, rigid, and load-bearing in tension. A chain may consist of two or more links. Chains can be classified by their design, which can be dictated by their use:
Two distinct chains can be connected using a quick link, carabiner, shackle, or clevis. The load can be transferred from a chain to another object by a chain stopper.
Uses for chains include:
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Several methods are available to connect chain ends to each other or to other objects, and to apply a load to a chain away from the ends. These methods are usually specific to the type of chain, and must be of the correct size.
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The metal link chain has been in use since at least 225 BC.[1]
The prevalent modern symbolism is oppression,[citation needed] due to the use for a mechanical restriction of the liberty of a human or animal.
Chains can also symbolize interconnectivityorinterdependence. Unicode, in versions 6.x, contains the U+1F517 🔗 LINK SYMBOL, which may show chain link(s). It may also denote a hyperlink.