Why doesn't a threaded thread plug gauge (GP) pass even though it is a new threaded ring gauge (GR)?
Due to the setting positional relationship of the limit thread gauge to maintain compatibility between male and female threads, the GO thread ring gauge and the GO thread plug gauge do not fit together. In the case of standard thread gauges, they do fit together, so you need to be aware of the difference in settings by checking the standards and documents.
[Effective diameter relationship diagram]
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