ISO 2903:1993
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ISO metric trapezoidal screw threads -- Tolerances

This standard was last reviewed and confirmed* in 2014.

*Therefore this version remains current


Specifies a tolerance system for threads according to ISO 2902; the system does not apply to threads with special requirements on axial displacement (e.g. lead screws); gives the structure of the system and tabulates pitches from 1.5 up to and including 44, comprises basic major diameters over 5.6 mm up to and including 355 mm; includes recommended tolerance classes for bolt and nut threads.


  • Document published on: 1993-10-28
    Edition: 2 (Monolingual) ICS: 21.040.10
    Status: Published Stage: 90.92 (2014-11-24)
    TC/SC: ISO/TC 1 Number of Pages: 10
  • Revised by: ISO 2903

    Revises: ISO 2903:1977

  • No corrigenda or amendments available

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