Question 503General Subjects - Assistant Engineer
70% to passWith respect to machine shop "taps and dies"; a plug tap is correctly used for _______________.
Achasing the threads on a circular rod
Breversing the threads in a hole
Cstarting the threads on a circular rod
Dthe second cut when threading a blind hole
AI Explanation
The correct answer is D) the second cut when threading a blind hole. A plug tap is used to complete the second cut when threading a blind hole. This is because a plug tap has a full set of threads along its length, which allows it to cut the threads all the way to the bottom of the hole. The other options are incorrect because a plug tap is not used for chasing threads on a rod (A), reversing threads in a hole (B), or starting threads on a rod (C). Those tasks would require different types of taps, such as a taper tap or a bottoming tap.
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