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1、INTERNATIONAL STANDARD ISO 4027 Third edition 2003-12-01 Reference number ISO 4027:2003(E) ISO 2003 Hexagon socket set screws with cone point Vis sans tte six pans creux, bout tronconique Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Te
2、chnical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4027:2003(E) ii ISO 2003 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this
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5、that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized
6、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 of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41
7、22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted
8、without license from IHS -,-,- ISO 4027:2003(E) ISO 2003 All rights reserved iii 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
9、 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 work. ISO collaborate
10、s 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 2. The main task of technical committees is to prepare International Standards
11、. Draft International Standards adopted by the technical committees 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. Attention is drawn to the possibility that some of the elements of this
12、 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4027 was prepared by Technical Committee ISO/TC 2, Fasteners. This third edition cancels and replaces the second edition (ISO 4027:1993), which has been technically rev
13、ised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,- . iv Copyright International Organization
14、 for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 4027:2003(E) ISO 2003 All rights reserved 1 Hexagon socke
15、t set screws with cone point 1Scope This International Standard specifies the characteristics of hexagon socket set screws with cone point and threads from M1,6 up to and including M24 and of product grade A. If, in special cases, specifications other than those listed in this International Standard
16、 are required, they should be selected from existing International Standards, e.g. ISO 261, ISO 898-5, ISO 965-2, ISO 3506-3 and ISO 4759-1. 2Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited a
17、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensions ISO 261, ISO general-purpose metric screw threads General plan ISO 898-5, Mechanical properties of
18、 fasteners made of carbon steel and alloy steel Part 5: Set screws and similar threaded fasteners not under tensile stresses ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose external and internal screw threads Medium quality ISO 965-3, ISO ge
19、neral purpose metric screw threads Tolerances Part 3: Deviations for constructional screw threads ISO 3269, Fasteners Acceptance inspection ISO 3506-3, Mechanical properties of corrosion-resistant stainless-steel fasteners Part 3: Set screws and similar fasteners not under tensile stress ISO 4042, F
20、asteners Electroplated coatings ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 6157-1, Fasteners Surface discontinuities Part 1: Bolts, screws and studs for general requirements ISO 8839, Mechanical properties of fasteners Bolts, screws, stud
21、s and nuts made of non-ferrous metals ISO 8992, Fasteners General requirements for bolts, screws, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 23429, Gauging of hexagon sockets Copyright International Organization for Standardization Provided by IHS under
22、license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4027:2003(E) 2 ISO 2003 All rights reserved 3Dimensions See Figure 1 and Table 1. Symbols and designations of dimensions a
23、re specified in ISO 225. Permissible alternative form of socket For broached sockets which are at the maximum limit of size, the overcut resulting from drilling shall not exceed of the length of any flat of the socket which is . a The angle is a requirement for short-length screws of nominal length
24、, situated in the shaded areas in Table 1. b The angle applies only to the portion of the point situated below the root diameter of the thread, and shall be for nominal lengths situated in the shaded areas in Table 1 and for all other lengths. c Incomplete thread . d A slight rounding or countersink
25、 at the mouth of the socket is permissible. Figure 1 1/3 e/2 120l 120 90 u 2P Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted
26、without license from IHS -,-,- ISO 4027:2003(E) ISO 2003 All rights reserved 3 Table 1 Dimensions Dimensions in millimetres Thread ( )M1,6M2M2,5M3M4M5M6M8M10M12M16M20M24 a 0,350,40,450,50,70,811,251,51,7522,53 max.0,40,50,650,7511,251,522,53456 Minor thread diameter b, c min.0,809 1,011 1,454 1,733
27、2,303 2,873 3,443 4,583 5,723 6,863 9,149 11,429 13,716 c nom.0,70,91,31,522,5345681012 max.0,724 0,913 1,3001,582,082,583,084,0955,146,148,175 10,175 12,212 min.0,710 0,887 1,2751,522,022,523,024,0205,026,028,025 10,025 12,032 min. d 0,70,81,21,21,522344,86,4810 e 1,51,7222,533,5568101215 Approxima
28、te mass, in kilograms per 1 000 pieces () (for information only) nom.min.max. 21,82,20,021 0,029 2,52,32,70,025 0,037 0,063 32,83,20,029 0,044 0,0750,09 43,764,240,037 0,0590,10,130,18 54,765,240,046 0,074 0,1250,170,260,37 65,766,240,054 0,0890,150,210,340,490,69 87,718,290,070,119 0,1990,290,5 0,7
29、31,04 1,72 109,7110,290,148 0,2490,370,660,971,39 2,35 3,41 1211,6512,350,2990,450,821,211,74 2,98 4,426,1 1615,6516,350,611,141,692,44 4,24 6,438,914,9 2019,5820,421,462,173,14 5,5 8,4411,720,1 30,4 2524,5825,422,774,02 7,0810,915,326,6 40,7 54,2 3029,5830,424,89 8,6513,518,833,1 51 68,7 3534,535,5
30、10,21622,339,6 61,3 83,2 4039,540,511,818,525,846,1 71,6 97,7 4544,545,52129,352,6 81,9112 5049,550,523,532,859,1 92,2127 5554,455,636,365,6103141 6059,460,639,872,2113156 NOTECommercial lengths are those between the bold stepped lines. a is the pitch of the thread. b . c Combined gauging of socket
31、dimensions and , see ISO 23429. d For screws with nominal lengths in the shaded areas. e For screws with nominal lengths below the shaded areas. d P dt df e s t l =7,85 kg/dm3 P emin=1,14smin es Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=
32、NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4027:2003(E) 4 ISO 2003 All rights reserved 4Requirements and reference International Standards See Table 2. 5Designation EXAMPLEA hexagon socket se
33、t screw with cone point, thread M6, nominal length and of property class 45H, is designated as follows: Hexagon socket set screw ISO 4027 - M612 - 45H Table 2 Specifications and reference International Standards MaterialSteelStainless steelNon-ferrous metal General requirementsInternational Standard
34、ISO 8992 Thread Tolerance International StandardsISO 261, ISO 965-2, ISO 965-3 Mechanical properties Property class45H A1-12H, A2-21H, A3-21H, A4-21H, A5-21H As agreed International StandardsISO 898-5ISO 3506-3ISO 8839 Tolerances Product gradeA International StandardISO 4759-1 Finish As processedPla
35、inPlain Requirements for electroplating are covered in ISO 4042. Requirements for electroplating are covered in ISO 4042. Requirements for non-electrolytically applied zinc flake coatings are covered in ISO 10683. Surface discontinuities Limits for surface discontinuities are covered in ISO 6157-1.
36、AcceptabilityFor acceptance procedure, see ISO 3269. 6g l =12 mm Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without licen
37、se from IHS -,-,- . 5 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4027:2003(E) ICS 21.0
38、60.10 Price based on 4 pages ISO 2003 All rights reservedCopyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:23:22 MDTNo reproduction or networking permitted without license from IHS -,-,-