BS-A-358-2-2000 ISO-5855-2-1999.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD AEROSPACE SERIES BS A 358
2、-2:2000 ISO 5855-2:1999 ICS 49.030.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW MJ threads Part 2: Limit dimensions for bolts and nuts Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:39:59 GMT+00:00 2006, Uncontrolled Copy, (c) BS
3、I This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 January 2000 BSI 01-2000 ISBN 0 580 34018 X BS A 358-2:2000 Amendments issued since publication Amd. No.Date
4、Comments National foreword This British Standard reproduces verbatim ISO 5855-2:1999 and implements it as the UK national standard. It supersedes BS 6293-2:1994 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and fastening
5、systems, to Subcommittee ACE/12/1, Aerospace fasteners and fastening systems (International), which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the
6、UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publica
7、tions referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions
8、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, page ii, pages 1
9、to 6, and inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:39:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI A Reference number
10、ISO 5855-2:1999(E) INTERNATIONAL STANDARD ISO 5855-2 Third edition 1999-10-15 Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts Aronautique et espace Filetage MJ Partie 2: Dimensions limites pour vis et crous BS A 358-2:2000 Licensed Copy: London South Bank University, London South Ba
11、nk University, Sat Dec 09 03:39:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI )E(9991:2-5585 OSI ii 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
12、carried out through ISO technical committees. 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 wo
13、rk. ISO collaborates closely with the 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 c
14、ommittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 5855-2 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4,
15、Aerospace fastener systems. This third edition cancels and replaces the second edition (ISO 5855-2:1988), of which it constitutes a technical revision. ISO 5855 consists of the following parts, under the general title Aerospace MJ threads: Part 1: General requirements Part 2: Limit dimensions for bo
16、lts and nuts Part 3: Limit dimensions for fittings for fluid systems BS A 358-2:2000 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:39:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DRADNATS LANOITANRETNI OSI)E(9991:2-5585 OSI 1 Aerospace MJ threads Part 2: L
17、imit dimensions for bolts and nuts 1 Scope This part of ISO 5855 specifies limit dimensions of MJ threads for bolts and nuts of nominal diameter 1,6 mm to 39 mm for aerospace construction. 2 Normative references The following normative documents contain provisions which, through reference in this te
18、xt, constitute provisions of this part of ISO 5855. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 5855 are encouraged to investigate the possibility of applying the most recent edition
19、 of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 965-1:1998, ISO general-purpose metric screw threads Tolerances Part 1: Pri
20、nciples and basic data. ISO 5855-1:1999, Aerospace MJ threads Part 1: General requirements. 3 Nominal diameters and pitches See Table 1. Table 1 Nominal diameters and pitches Dimensions in millimetres Nominal diameter d or D Pitch P Nominal diameter d or D Pitch P 1,60,3514 20,416 2,50,45181,5 30,52
21、0 3,50,622 40,724 50,827 6302 7133 836 101,2539 12 BS A 358-2:2000 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:39:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI )E(9991:2-5585 OSI OSI 2 4 Tolerance classes See Table 2. Table 2 Tolerance classes Bolt thread
22、sNut threads d6hD1 6H for nominal diameter 6 mm d24hD24H 5 Provisions for coated threads Before coating, the dimensions of the threads shall be compatible with the thickness of the coating selected and with the limit dimensions for finished parts specified in clause 6. 6 Limit dimensions for finishe
23、d parts (coated or uncoated) 6.1 Bolt threads Figure 1 illustrates the position and the form of the limit profiles (maximum and minimum) in relation to the basic profile (see ISO 5855-1). Tables 3 and 4 specify the limit dimensions. a Pitch P b Basic and maximum profiles c Basic profile d Minimum pr
24、ofile Figure 1 Limit profiles for bolt threads BS A 358-2:2000 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:39:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI OSI)E(9991:2-5585 OSI 3 Table 3 Limit dimensions for 4h6h threads for bolts Dimensions in millimetr
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