ISBN 978-0-626-19721-6 ISO 1101:2004 SOUTH AFRICAN NATIONAL STANDARD Engineering drawing Part 2: Geometrical tolerancing Section 1: Tolerancing of form, orientation, location and run-out Generalities, definitions, symbols, indications on drawings This national standard is the identical implementation of ISO 1101:2004 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa
ISO 1101:2004 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA TC 5120.61, Construction standards, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in November 2007. This SANS document supersedes SABS 0111-2-1:1993 (edition 1). SANS 10111 (SABS 0111) consists of the following parts, under the general title, Engineering drawing: Part 1: General principles. Part 2: Geometric tolerancing. SANS 10111-2 (SABS 0111-2), in turn, consists of the following sections: Section 1: Tolerancing of form, orientation, location and run-out Generalities, definitions, indications on drawings (equivalent to ISO 1101:2004). Section 2: Datums and datum-systems for geometrical tolerances (equivalent to ISO 5459:1981). Section 3: Maximum material principle (equivalent to ISO 2692:1988). Section 4: Positional tolerancing (equivalent to ISO 5458:1998). Section 5: Fundamental tolerancing principle (equivalent to ISO 8015:1985).
INTERNATIONAL STANDARD ISO 1101 Second edition 2004-12-15 Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out Spécification géométrique des produits (GPS) Tolérancement géométrique Tolérancement de forme, orientation, position et battement Reference number ISO 2004
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Contents Page 1 Scope... 1 2 Normative references... 1 3 Terms and definitions... 2 4 Basic concepts... 3 5 Symbols... 4 6 Tolerance frame... 6 7 Toleranced features... 7 8 Tolerance zones... 8 9 Datums... 11 10 Supplementary indications... 13 11 Theoretically exact dimensions (TED)... 13 12 Restrictive specifications... 14 13 Projected tolerance zone... 15 14 Maximum material requirement... 15 15 Least material requirement... 15 16 Free state condition... 16 17 Interrelationship of geometrical tolerances... 16 18 Definitions of geometrical tolerances... 16 Annexes A Former practices... 46 B Assessment of geometrical deviations... 49 C Relation to the GPS matrix model... 53 Bibliography... 54 ISO 2004 All rights reserved iii