Designation of M 16 x 2 fine thread

Q.  What does the designation M 16 x 2 indicate?
- Published on 14 Sep 15

a. I.S.O. Metric fine thread
b. I.S.O. Metric coarse thread
c. B.S.F. Metric coarse thread
d. B.S.F Metric fine thread

ANSWER: I.S.O. Metric fine thread

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    Discussion

  • Sravanthi   -Posted on 04 Nov 15
    - I.S.O. Metric fine threads are designated by M which is followed by nominal diameter and pitch.

    - Nominal diameter and pitch are separated by the sign 'x'.

    - 1) Example: M 16 x 2

    here, M denotes I. S. O metric fine threads, 16 is the nominal diameter and 2 is the pitch diameter. They are measured in millimeters.

    - 2) Example: M30

    here, M denotes I. S. O metric coarse thread and 30 is the nominal diameter. Pitch is not indicated in I.S.O metric coarse threads.

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