Multiple Choice Question (MCQ)

Question: What is the formula to calculate tap drill size?
A. Tap drill size = Major dia ? (2 x depth)
B. Tap drill size = Major dia + (2 x depth)
C. Tap drill size = Major dia ? (2 + depth)
D. Tap drill size = Major dia + (2 + depth)
Correct Answer: Tap drill size = Major dia ? (2 x depth)