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I have a fitting that I think is a metric pipe thread. It is tapered.

I have seen some charts on the web, but they are just for identifying parallel threads, not tapered threads. For example, these charts just have one "outer diameter" listed for the thread, but obviously each thread has a different diameter if the thread is tapered.

In the case of my fitting, it has 5 threads in 9mm or 11/32" which does match the pitch of any pipe thread that I know of.

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  • @TonyStewartSunnyskyguyEE75 I need a method for identifying the thread. I can't tell if it matches something random on the web just by looking at the picture. – Tyler Durden May 27 at 2:57
  • I take it to the store and contribute to why the nut and bolt isle is always a mess. – Mazura May 27 at 3:45
  • Compare diameter measurement with those in the photos. Sites with p/n’s and dimensions, one has to match ! e.g. M12 M12X1.25 Male 24 Deg Tapered Hole for Compression – Tony Stewart Sunnyskyguy EE75 May 27 at 4:13
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    @doug deden I don’t I would trust a diameter measurement as every time I set up our universal machine it is slightly different, in some cases I set it up a little undersized on purpose I think the TPI or threads per inch would be a better indication as those don’t change. – Ed Beal May 31 at 6:46

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