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ISO 14405-3:2016

Geometrical product specifications (GPS) - Dimensional tolerancing - Part 3: Angular sizes
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ISO 14405-3:2016

Geometrical product specifications (GPS) - Dimensional tolerancing - Part 3: Angular sizes

PUBLISH DATE 2016
ISO 14405-3:2016

ISO 14405-3:2016 establishes the default specification operator for angular size and defines a number of special specification operators for features of angular size: cone (truncated, i.e. frustum, or not), wedge (truncated or not), two opposite straight lines (intersection of a wedge/truncated wedge and a plane perpendicular to the intersection straight line of the two planes of the wedge/truncated wedge, intersection of a cone/frustum and a plane containing the axis of revolution of the cone/frustum). See Figure 1 and Figure 2.

ISO 14405-3:2016 also defines the specification modifiers and the drawing indications for these angular sizes.

ISO 14405-3:2016 covers the following angular sizes:

  • local angular size:
    • angular size between two lines;
    • portion angular size;
  • global angular size:
    • direct global angular size:
      • least squares angular size;
      • minimax angular size;
      • rank order angular size/indirect global angular size:
        • maximum angular size;
        • minimum angular size;
        • average angular size;
        • range of angular sizes;
        • mid-range angular size;
        • median angular size;
        • standard deviation of angular size.

ISO 14405-3:2016 defines the meaning of tolerances of angular sizes indicated as:

  • + and/or - limit deviations, e.g. 0°/-0,5°, or
  • indicated with upper limit of size (ULS) and/or lower limit of size (LLS), e.g. 35° max. or 15° min., 34°/36°,
  • with or without modifiers.

ISO 14405-3:2016 provides a set of tools to express several types of angular size characteristics. It does not give any information on the relationship between a function or a use and an angular size characteristic.

SDO ISO: International Organization for Standardization
Document Number ISO 14405
Publication Date Dec. 15, 2016
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 213
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