Locking devices for nuts: identification by construction detail Which locking device has a bottom cylindrical portion recessed to receive the tip of a locking set screw? Choose the correct nut type.
Mechanical Engineering
Machine Design
Difficulty: Easy
Choose an option
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ACastle nut
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BJam nut (lock nut)
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CRing nut
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DSawn nut (split nut)
Answer
Correct Answer: Ring nut
Explanation
IdentificationA ring nut (round nut) can incorporate a recessed cylindrical portion that accepts a locking set screw to secure the nut in place.
Why others are wrong
- Castle nut: uses castellations with a split pin through a drilled bolt, not a set screw recess.
- Jam nut: a thin nut used against another nut; no set screw.
- Sawn nut: has a sawn slot tightened by a small screw to clamp, not a recessed seat for a separate locking set screw.
Final AnswerRing nut