nut and bolt

Noun
  1. A fastener made by screwing a nut onto a threaded bolt (synset 103841971)
    is a type of: fastener, fastening, fixing, holdfast - restraint that attaches to something or holds something in place
    has:
    • bolt - a screw that screws into a nut to form a fastener
    • nut - a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt

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