Drill size tolerance charts are necessary because:
A)different drill bits may be used in similar situations.
B)it is often up to the machinist which drill bit to use.
C) a computer-aided manufacturing device is not always available.
D) it is accepted that that no hole is going to be drilled exactly the size specified.

Question

Quizplus · Accepted Answer

Drill size tolerance charts are essential because they acknowledge the reality that no hole can be drilled to an exact specified size due to variations in material properties, drill bit wear, and other factors. These charts provide the acceptable range of sizes for holes, ensuring that parts fit together properly even with slight deviations from the ideal measurements.

Drill Size Tolerance Charts Are Necessary Because