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BS EN ISO 5458:2018

BS EN ISO 5458:2018

$198.66

Geometrical product specifications (GPS). Geometrical tolerancing. Pattern and combined geometrical specification

Published By Publication Date Number of Pages
BSI 2018 54
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This document establishes complementary rules to ISO 1101 to be applied to pattern specifications and defines rules to combine individual specifications, for geometrical specifications e.g. using the symbols POSITION, SYMMETRY, LINE PROFILE and SURFACE PROFILE, as well as STRAIGHTNESS (in the case where the toleranced features are nominally coaxial) and FLATNESS (in the case where the toleranced features are nominally coplanar) as listed in Annex C.

These rules apply when a set of tolerance zones are grouped together with location or orientation constraints, through the use of the CZ, CZR or SIM modifiers.

This document does not cover the use of the pattern specifications when the least and maximum material requirement is applied (see ISO 2692).

This document does not cover the establishment of common datum (see ISO 5459) based on pattern features.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols and specification modifiers
5 Principles
5.1 General
12 5.2 Concepts
5.3 Rule A: for position specification
13 5.4 Rules for pattern specification
5.4.1 General
5.4.2 Rule B: constraints
14 5.4.3 Rule C: indication of a single indicator pattern specification
16 5.4.4 Rule D: indication of a multiple indicator pattern specification
20 5.4.5 Rule E: indication of multi-level single indicator pattern specification
25 5.5 Pattern characteristic
26 Annex A (informative) Former practice, important changes
28 Annex B (informative) Differences between ISO 5458:1998 and this document
30 Annex C (informative) Examples of pattern specifications
49 Annex D (normative) Relations and dimensions of graphical symbols
50 Annex E (informative) Concept diagram for pattern specification and relation with modifiers
51 Annex F (informative) Relation to the GPS matrix model
52 Bibliography

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BS EN ISO 5458:2018
$198.66