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Calculated Thread Depths for Metric fine threads

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  • #31
    Oh lordy it raised a big ruckus the last time needles were brought up. I remember because it was me who said that, then. It turned out to be a good way to identify angry machinists

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    • #32
      Originally posted by Paul Alciatore View Post
      OK, the calculation again, with the correct thread pitch.

      Based on M12 x 1.25 and Sharp Vee tool:
      Depth of thread = 0.614 * pitch. Even for wrong pitches.

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      • #33
        Thank you Thankyou Invaluable Help. Its appreciated .The mention of making a accurate gauge has merit, For a standard m12 x 1.25 pitch thread whats the best way to make a accurate gauge for the male to fit into my machined female Part? Thanx Mike

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        • #34
          M12 x 1.25 is a standard Metric Fine thread so you should be able to find all the information you require in the normal thread tables.
          Bill

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          • #35
            I got an M12x1.25 6HX tap made specifically for blind holes in stainless steels. If you're a neighbor you can borrow it and be done, no gauge needed.

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            • #36
              Hello Every One.
              Many thanx for the Help. My Parts came out nearly perfect, The male and Female threads were very nice . Thankyou Mike

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