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?