1、BRITISH STANDARD BS EN ISO 15481:1999 Cross recessed pan head drilling screws with tapping screw thread The European Standard EN ISO 15481:1999 has the status of a British Standard ICS 21.060.10BSENISO15481:1999 This British Standard, having been prepared under the directionof the Engineering Sector
2、Committee, was publishedunder the authorityofthe Standards Committee andcomes intoeffecton 15 November 1999 BSI 04-2000 ISBN 0 580 35001 0 National foreword This British Standard is the English language version of ENISO15481:1999. It is identical with ISO15481:1999. The UK participation in its prepa
3、ration was entrusted by Technical Committee FME/9, Bolts, nuts and accessories, to Subcommittee FME/9/2, Slotted and recessed head screws, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpret
4、ation, or proposals for change, and keep the 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 Attention is drawn to the
5、fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the B
6、SI 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 of a contract. Users of British Standards are respo
7、nsible 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, pagesi andii, theENISO title page, page2, the ISO title page, pagesii toiv, pages1 to4 an
8、d a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO15481:1999 BSI 04-2000 i Contents Page National fore
9、word Inside front cover Foreword 2 Foreword iii Text of ISO 15481 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15481 August 1999 ICS 21.060.00 English version Cross recessed pan head drilling screws with tapping screw thread (ISO 15481:1999) Vis autoperceuses tte cylindrique bom
10、be large empreinte cruciforme, avec filetage de vis tle (ISO15481:1999) Flachkopf-Bohrschrauben mit Kreuzschlitz mit Blechschraubengewinde (ISO15481:1999) This European Standard was approved by CEN on 16 July 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipu
11、late the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard ex
12、ists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards b
13、odies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Nor
14、mung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15481:1999 EENISO15481:1999 BSI 04-2000 2 Foreword The text of the International Standard ISO15481:1999 has been
15、 prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by pub
16、lication of an identical text or by endorsement, at the latest by February 2000, and conflicting national standards shall be withdrawn at the latest by February 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imple
17、ment this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. NOTE FROM CEN/CS: The foreword is susceptible to be amended on reception of
18、the German language version. The confirmed or amended foreword, and when appropriate, the normativeAnnex ZA for the references to international publications with their relevant European publications will be circulated with the German version. Endorsement notice The text of the International Standard
19、 ISO15481:1999 was approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed inAnnex ZA (normative).ENISO15481:1999 ii BSI 04-2000 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Specifications and r
20、eference International Standards 3 5 Designation 3 Annex ZA (normative) Normative references to international publications with their relevant European publications 4 Figure 1 1 Table 1 Dimensions 2 Table 2 Specifications and reference International Standards 3ENISO15481:1999 BSI 04-2000 iii Forewor
21、d 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 committees. Each member body interested in a subject for which a technica
22、l 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 the International Electrotechnical Commission (IEC) on all matters of ele
23、ctrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires
24、approval by at least75% of the member bodies casting a vote. International Standard ISO15481 was prepared by Technical Committee ISO/TC2, Fasteners.iv blankENISO15481:1999 BSI 04-2000 1 1 Scope This International Standard specifies the characteristics of cross recessed pan head drilling screws with
25、tapping screw threads from ST2,9 up to and including ST6,3. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of
26、 these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document re
27、ferred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1478:1999, Tapping screw thread. ISO 3269:, Fasteners Acceptance inspection 1) . ISO 4042:1999, Fasteners Electroplated coatings. ISO 4757:1983, Cross recesses for screws. ISO 4759-1:, Tolera
28、nces for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B andC 2) . ISO 10666:1999, Drilling screws with tapping screw thread Mechanical and functional properties. 3 Dimensions SeeFigure 1 andTable 1. 1) To be published. (Revision of ISO 3269:1988) 2) To be published. (Revision of
29、 ISO 4759-1:1978) aThe function of the drilling point (diameter d p ) is specified in ISO 10666. Figure 1 ENISO15481:1999 2 BSI 04-2000 Table 1 Dimensions Dimensions in millimetres Thread size ST2,9 ST3,5 ST4,2 ST4,8 ST5,5 ST6,3 P a 1,1 1,3 1,4 1,6 1,8 1,8 a b max. 1,1 1,3 1,4 1,6 1,8 1,8 d a max. 3
30、,5 4,1 4,9 5,6 6,3 7,3 d k max. 5,6 7,00 8,00 9,50 11,00 12,00 min. 5,3 6,64 7,64 9,14 10,57 11,57 k max. 2,40 2,60 3,1 3,7 4,0 4,6 min. 2,15 2,35 2,8 3,4 3,7 4,3 r min. 0,1 0,1 0,2 0,2 0,25 0,25 r f . 5 6 6,5 8 9 10 Recess No. 1 2 3 Cross recess Type H m ref. 3 3,9 4,4 4,9 6,4 6,9 Penetration max.
31、1,8 1,9 2,4 2,9 3,1 3,6 min. 1,4 1,4 1,9 2,4 2,6 3,1 Type Z m ref. 3 4 4,4 4,8 6,2 6,8 Penetration max. 1,75 1,9 2,35 2,75 3,00 3,50 min. 1,45 1,5 1,95 2,3 2,55 3,05 Drilling range (sheet or plate thickness) c from 0,7 0,7 1,75 1,75 1,75 2 to 1,9 2,25 3 4,4 5,25 6 l l g d nom. min. max. min. 9,5 8,7
32、5 10,25 3,25 2,85 13 12,1 13,9 6,6 6,2 4,3 3,7 16 15,1 16,9 9,6 9,2 7,3 5,8 5 19 18 20 12,5 12,1 10,3 8,7 8 7 22 21 23 15,1 13,3 11,7 11 10 25 24 26 18,1 16,3 14,7 14 13 32 30,75 33,25 23 21,5 21 20 38 36,75 39,25 29 27,5 27 26 45 43,75 46,25 34,5 34 33 50 48,75 51,25 39,5 39 38 a P is the pitch of
33、the thread. b a is the distance from the underside of the head to the first major diameter of the thread. c In order to determine the nominal length l it may be necessary to add an air gap (if present) to the individual sheet or plate thicknesses. d l gis the distance from the underside of the head
34、to the last major diameter of the thread.ENISO15481:1999 BSI 04-2000 3 4 Specifications and reference International Standards SeeTable 2. Table 2 Specifications and reference International Standards 5 Designation EXAMPLE A cross recessed pan head drilling screw with thread ST3,5, nominal length l=16
35、mm and recess type Z is designated as follows: Drilling screw ISO 15481 ST3,5 16 Z Material Steel International Standard ISO 10666 Thread International Standard ISO 1478 Cross recesses International Standard ISO 4757 Mechanical and functional properties International Standard ISO 10666 Tolerances Pr
36、oduct grade A International Standard ISO 4759-1 Finish Plain Requirements for electroplating are covered in ISO 4042. Acceptability Acceptance procedure is covered in ISO3269.ENISO15481:1999 4 BSI 04-2000 Annex ZA (normative) Normative references to international publications with their relevant Eur
37、opean publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions
38、of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. Publication Year Title EN Year ISO 1478 1983 Tapping screws thread EN ISO 1478 1994 ISO 4042 1999 Fast
39、eners Electroplated coatings EN ISO 4042 1999blankBS EN ISO 15481:1999 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international leve
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