Which of the following is true when...

Question 1 / 205eccef9bbacbc34ba4d451de

Question 1 of 205eccef9bbacbc34ba4d451de

Which of the following is true when comparing the different "class of fit" for machine threads on bolts and nuts?

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Question 1 of 20

5eccef9bbacbc34ba4d451de

Which of the following is true when comparing the different "class of fit" for machine threads on bolts and nuts?

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🔍 Key Concepts

• Class of fit refers to how tight or loose the mating threads are, not how many threads per inch (TPI) there are. • Thread pitch/threads per inch (TPI) is a separate concept from class of fit; different fits can share the same TPI. • Higher class numbers generally mean a tighter, more precise fit; lower class numbers mean a looser, easier-assembling fit.

💭 Think About

• Ask yourself: does changing from class 1 to class 4 automatically change the number of threads per inch, or just how snugly the existing threads mate? • Think about which class is commonly used for general-purpose bolts and nuts, and which are used for very precise, high-accuracy fits. • Compare in your mind: if you want a part that assembles easily even with some dirt or damage, would you pick a lower or higher class number?

✅ Before You Answer

• Verify that class of fit ≠ threads per inch (TPI); they are defined separately in thread standards. • Check whether higher class number means tighter or looser fit in standard machine practice. • Confirm which statement compares relative tightness/looseness correctly between the mentioned classes (1, 2, and 4).

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Question 1 of 20

Which of the following is true when comparing the different "class of fit" for machine threads on bolts and nuts?

A class 1 fit always has fewer threads per inch.

A class 1 fit is tighter than a class 2 fit.

A class 4 fit always has more threads per inch.

A class 2 fit is looser than a class 4 fit.

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Question 1 / 205eccef9bbacbc34ba4d451de

Question 1 of 205eccef9bbacbc34ba4d451de

Which of the following is true when comparing the different "class of fit" for machine threads on bolts and nuts?

Back

Question 1 of 20

5eccef9bbacbc34ba4d451de

Which of the following is true when comparing the different "class of fit" for machine threads on bolts and nuts?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed