Hole Notes and Hole Types

Hole Notes and Hole Types

Question:

Geez… there’s lots of different types of holes…. how do I know the difference when reading a drawing?

Answer:

Once again… Jim to the rescue with a LOT of information about holes.

Going Beyond: Hole Notes

Answer the questions below by copying and pasting them into a google doc. Submit the answers to your instructor.

  1. What # hole will screw A fit into? If more than one list them all. 1,2,3,4,6
  2. What # holes will screw b fit into? If more than one list them all. 5 only
  3. What holes might a bolt fit into? If more than one list them all.
  4. Name the holes:
  5. Hole #1 & 2 is a ____________________
  6. Hole #3 is a ____________________
  7. Hole #4 is a ____________________
  8. What might be the advantage for using this type of hole?
  9. Hole #5 is a ____________________
  10. What might be an advantage for using this type of hole?
  11. Hole #6 is a ____________________

Going Beyond: Hole Notes 2

  1. The Symbol “A” in the photo above means ________________
  2. The Symbol “B” in the photo above means ________________
  3. The Symbol “C” in the photo above means ________________
  4. The Symbol “D” in the photo above means ________________

Going Beyond: Thread Notes

Answer the questions using the picture above.

  1. What is the diameter of the bolt that goes into the threaded hole?
  2. What does the “-18” in the photo above mean?
  3. What does UNC mean? Explain fully.
  4. What might a bolt or hole be if it is not UNC? What does it stand for?

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CHRIS HURD

JIM HANSON



Chris and Jim CIM
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