ISO-4759-1-2000.pdf
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1、Reference number ISO 4759-1:2000(E) ISO 2000 INTERNATIONAL STANDARD ISO 4759-1 Second edition 2000-11-15 Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C Tolrances des lments de fixation Partie 1: Vis, goujons et crous Grades A, B et C ISO 4759-1:2000(E) PDF d
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5、l rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country
6、of the requester. ISO copyright office Case postale 56 ? CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2000 All rights reserved ISO 4759-1:2000(E) ISO 2000 All rights reservediii ContentsPage Foreword.iv 1Scope 1 2N
7、ormative references2 3Tolerances for metric bolts, screws and studs3 4Tolerances for metric nuts25 5Tolerances for tapping screws.36 Annex A (informative) Tolerances.44 Annex B (informative) Examples of dimensioned and toleranced fasteners46 Annex C (informative) Examples of gauges and other measuri
8、ng devices49 ISO 4759-1:2000(E) iv ISO 2000 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical co
9、mmittees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with th
10、e International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the memb
11、er bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 4759 may be the subject of patent rights. ISO shall not be held responsible for i
12、dentifying any or all such patent rights. International Standard ISO 4759-1 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 7, Reference Standards for fasteners (mainly covering terminology, dimensioning, sizes and tolerancing). This second edition cancels and replaces the f
13、irst edition (ISO 4759-1:1978), which has been technically revised. ISO 4759 consists of the following parts, under the general title Tolerances for fasteners: ?Part 1: Bolts, screws, studs and nuts Product grades A, B and C ?Part 3: Plain washers for bolts, screws ans nuts Product grades A and C An
14、nexes A to C of this part of ISO 4759 are for information only. INTERNATIONAL STANDARDISO 4759-1:2000(E) ISO 2000 All rights reserved1 Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C 1Scope This part of ISO 4759 specifies a selection of tolerances for bolts,
15、screws, studs and nuts with ISO metric threads and with product grades A, B and C and for tapping screws with product grade A. NOTEThe product grades refer to the size of the tolerances where grade A is the most precise and grade C is the least precise. The tolerances, except tolerances for threads,
16、 are selected from the system of limits and fits specified in ISO 286-1 and ISO 286-2. The tolerances for metric threads are taken from the series of tolerance classes specified in ISO 965-3. The tolerances for tapping screw threads are covered in ISO 1478. The tolerances of form and position are sp
17、ecified and indicated in accordance with ISO 1101, ISO 8015 and ISO 2692. The tolerances specified in this part of ISO 4759 apply to fasteners prior to coating unless otherwise specified. See also ISO 4042. Deviations from the tolerances specified in this part of ISO 4759 are only permitted in produ
18、ct standards where there are valid technical reasons. In cases where there is a difference between the tolerance requirements in this part of ISO 4759 and the product standard, the product standard takes precedence. It is recommended that these tolerances also be used for non-standard fasteners. Dim
19、ensions and tolerances given in this part of ISO 4759 are in millimetres. ISO 4759-1:2000(E) 2 ISO 2000 All rights reserved 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 4759. For dated refe
20、rences, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 4759 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated referenc
21、es, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 225:1983, Fasteners Bolts, screws, studs and nuts Symbols and designation of dimensions. ISO 286-1:1988, ISO system of limits and fits Part
22、1: Bases of tolerances, deviations and fits. ISO 286-2:1988, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts. ISO 885:2000, General purpose bolts and screws Metric series Radii under the head. ISO 965-3:1998, ISO general purpose met
23、ric screw threads Tolerances Part 3: Deviations for constructional screw threads. ISO 1101:2000, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out. ISO 1478:1999, Tapping screws thread. ISO 1479:1983, Hexagon head tapping screws. I
24、SO 2692:1988, Technical drawings Geometrical tolerancing Maximum material principle. ISO 4032:1999, Hexagon nuts, style 1 Product grades A and B. ISO 4042:1999, Fasteners Electroplated coatings. ISO 4757:1983, Cross recesses for screws. ISO 7053:1992, Hexagon washer head tapping screws. ISO 7721:198
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