NF EN ISO 14405-2

NF EN ISO 14405-2

January 2019
Standard Current

Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2 : dimensions other than linear or angular sizes

This document illustrates the ambiguity caused by the use of dimensional specifications to control properties other than linear or angular size and the benefit of using geometrical specifications instead. Dimensional tolerancing can be indicated by ± tolerancing or geometrical specifications. The ambiguity caused by using ± tolerances for dimensions other than linear or angular sizes (for individual tolerances and general tolerances according to, e.g. ISO 2768-1 and ISO 8062-3) is explained in Annex A. NOTE 1 The figures, as shown in this document, merely illustrate the text and are not intended to reflect actual usage. The figures are consequently simplified to indicate only the relevant principles. NOTE 2 For indications of dimensional specifications, see the following: — ISO 14405-1 for linear size; — ISO 14405-3 for angular size; — ISO 2538-1 and ISO 2538-2 for wedges; — ISO 3040 for cones. NOTE 3 The rules for geometrical specifications are given in ISO 1101.

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Collections

National standards and national normative documents

Publication date

January 2019

Number of pages

32 p.

Reference

NF EN ISO 14405-2

ICS Codes

17.040.10   Limits and fits
17.040.40   Geometrical Product Specification (GPS)

Classification index

E04-563-2

Print number

1

International kinship

ISO 14405-2:2018

European kinship

EN ISO 14405-2:2019
Sumary
Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2 : dimensions other than linear or angular sizes

This document illustrates the ambiguity caused by the use of dimensional specifications to control properties other than linear or angular size and the benefit of using geometrical specifications instead.

Dimensional tolerancing can be indicated by ± tolerancing or geometrical specifications.

The ambiguity caused by using ± tolerances for dimensions other than linear or angular sizes (for individual tolerances and general tolerances according to, e.g. ISO 2768-1 and ISO 8062-3) is explained in Annex A.

NOTE 1 The figures, as shown in this document, merely illustrate the text and are not intended to reflect actual usage. The figures are consequently simplified to indicate only the relevant principles.

NOTE 2 For indications of dimensional specifications, see the following:

— ISO 14405-1 for linear size;

— ISO 14405-3 for angular size;

— ISO 2538-1 and ISO 2538-2 for wedges;

— ISO 3040 for cones.

NOTE 3 The rules for geometrical specifications are given in ISO 1101.

Replaced standards (1)
NF EN ISO 14405-2
February 2012
Standard Cancelled
Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2 : dimensions other than linear sizes

<p>ISO 14405-2:2011 illustrates the use of geometrical tolerancing for dimensions that are not linear sizes to avoid the ambiguity that the use of ± tolerances on these dimensions causes. Both linear and angular dimensions, except size of features of size, are covered. </p> <p>Dimensional tolerancing can be indicated by ± tolerancing or geometrical tolerancing.</p> <p>The ambiguity caused by using ± tolerances for dimensions other than linear sizes is explained in an informative annex.</p>

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principes et règles d'indication des dimensions et des tolérances correspondantes
  • 5 Unités utilisées sur les dessins et relatives aux dimensions
  • 6 Indication des tolérances pour les dimensions linéaires ou angulaires
  • 7 Illustrations de tolérancements en plus ou moins ambigus face à des spécifications géométriques non ambigües
  • 8 Tolérancement angulaire
  • Annexe A Explications et exemples sur l'ambigüité causée par l'usage de tolérances en plus ou moins sur des dimensions autres que des tailles linéaires ou angulaires
  • Annexe B Relation avec le modèle de matrice GPS
  • Bibliographie
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