Cars & Driving

  • noun a fully threaded bolt with a parallel shaft, used to secure metal parts together (such as a hub or wheel to a shaft); can have a variety of heads, the most common being hexagonal, round or countersunk.


  • An often headless screw used to secure two separate parts in a position relative to each other, preventing the independent motion of either part.
  • A screw used to adjust the tension of a spring.