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Meaning of machine bolt

machine' bolt"

Pronunciation: [key]
  1. a threaded fastener, used with a nut for connecting metal parts, having a thread diameter of about in. (6.4 mm) or more and a square or hexagonal head for tightening by a wrench. Cf.See illus. under.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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