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Shafts, bolts, nuts, keys, rivets and webs are conventionally

  • A.shown unsectioned even when the plane passes through them
  • B.hatched more closely than the surrounding parts
  • C.omitted entirely from the sectional view
  • D.drawn in a different colour from the other parts

Answer: A

Correct answer: shown unsectioned even when the plane passes through them

Sectioning a solid shaft, bolt, nut, key, rivet or web would show a solid area of hatching that conveys nothing, and in the case of a web would falsely suggest a solid flange. The convention is to draw such parts unsectioned even when the cutting plane passes along them, so the drawing shows the shape rather than the cut.

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