+A **bolt** can be a flash of [lightning](/wiki/Lightning) across the sky, or a sudden, swift motion. More commonly, it is a sturdy [fastener](/wiki/Fastener), a metal rod with threads designed to hold parts together with a nut.
+## See also
+- [Thread](/wiki/Thread)
+- [Welding](/wiki/Welding)
+- [Electricity](/wiki/Electricity)
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