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ISO 2903:1993

Withdrawn Date published:

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ISO metric trapezoidal screw threads — Tolerances

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.

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Related Information

Similar Standards

  • BS 1936-2:1991

    Undercuts and runouts for screw threads, Specification for ISO metric screw threads

  • BS 3643-1:2007

    ISO metric screw threads, Principles and basic data

  • BS 3643-2:2007

    ISO metric screw threads, Specification for selected limits of size

  • BS 4185-10:1977

    Machine tool components, Trapezoidal threads for lead and feed screw assemblies

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ISO 2903:1993

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