Millwright Level 1 Practice Exam

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Prepare for the Millwright Level 1 Exam with comprehensive resources. Engage with quizzes and diverse study materials focusing on essential skills required in the millwright profession. Get ready to ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

When tapping a hole with a pipe tap, how many threads of the nipple should turn into the hole before a wrench is needed?

1-2 threads
2-3 threads
3-4 threads
4-5 threads

The correct answer is: 2-3 threads

For tapping a hole with a pipe tap, the ideal practice is to ensure that the leading threads of the nipple engage the hole properly before using a wrench. Turning the nipple into the tapped hole by 2-3 threads allows for effective alignment and ensures that the threads are not cross-threaded, which can lead to damage. This range is sufficient to provide stability and support, preventing misalignment or stripping. If the nipple is turned in fewer than two threads, there may not be enough engagement to guide the nipple properly into the hole, potentially leading to issues with threading. Conversely, turning it in more than three threads before wrenching can lead to excess threading, which can create tension and increase the risk of thread damage. Thus, engaging the nipple by 2-3 threads combines the need for adequate alignment with the practicality of ensuring that the threads grip correctly before applying additional torque with a wrench.