1、BRITISH STANDARD BS ISO 14279:2002 Aerospace Drives, internal, cruciform Metric series ICS 49.030.20 BS ISO 14279:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy an
2、d Strategy Committee on 8 August 2002 BSI 8 August 2002 ISBN 0 580 40195 2 National foreword This British Standard reproduces verbatim ISO 14279:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/12/1, Aerospace fasten
3、ers, fastening systems, details and parts (International), which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this documen
4、t may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Us
5、ers are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for chang
6、e, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 8, an inside back cover and a ba
7、ck cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 14279:2002(E)INTERNATIONAL STANDARD ISO 14279 First edition 2002-06-15 Aerospace Drives, internal, cruciform Metric
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13、14279:2002iiIS:97241 O2002(E) I SO 2002 All irthgs ersedevr iiiForeword 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 com
14、mittees. 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 the
15、 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. The main task of technical committees is to prepare International Standards. Draft Internatio
16、nal 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 International Sta
17、ndard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14279 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. BSISO14279:2002iiiINTENRATIONAL TSANDADR IS
18、:97241 O2002(E)I SO 2002 All irthgs ersedevr 1Aerospace Drives, internal, cruciform Metric series 1 Scope This International Standard specifies the dimensions of metric internal cruciform drives used in metric screws in the nominal thread diameter range of 1,6 mm to 20 mm. Drivers and gauges used in
19、 conjunction with these drives are defined in ISO 14280 and ISO 14281. 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
20、 of, any of 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
21、document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 3202:1997, Aerospace Screws, pan head, internal offset cruciform ribbed or unribbed drive, threaded to head, MJ threads, metallic material, coated or uncoated, strength classes les
22、s than or equal to 1 100 MPa Dimensions ISO 5856:1991, Aerospace Screws, 100 normal countersunk head, internal offset cruciform ribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions ISO 7913:1
23、994, Aerospace Bolts and screws, metric Tolerances of form and position ISO 13921:1996, Aerospace Screws, 100 reduced countersunk head, internal offset cruciform ribbed or unribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less th
24、an or equal to 1 100 MPa Dimensions BSISO14279:20021IS:97241 O2002(E) 2 I SO 2002 All irthgs ersedevr3 Configuration and dimensions See Figures 1, 2, 3 and 4 and Tables 1, 2, 3 and 4. Dimensions and tolerances are expressed in millimetres. The presentation of the location tolerances conforms to ISO
25、1101. 4 Designation The drive designation shall be as follows: BSISO14279:20022IS:97241 O2002(E) I SO 2002 All irthgs ersedevr 3aValues of parameters for specified heads are listed in Tables 2, 3 and 4. bThis location tolerance applies to all head configurations. cAs defined in ISO 7913. Figure 1 Co
26、nfiguration Drive BSISO14279:20023IS:97241 O2002(E) 4 I SO 2002 All irthgs ersedevrTable 1 Dimensions Drive B C F G K M N R U Drive code nom. tol. 0 015 nom. tol. 0,05 0 +nom. tol. 015 0 + max. Drive code inches bR0 0,64 0,03 a 0,36 0,81 0,2 0,36 0 0,09 0,3 0 R1 0,96 0 0,03 138 0,53 0 0,05 1,27 0,3
27、0,46 7 0,6 1 R2 1,47 140 0,74 2,29 0,6 0,84 0,7 0,3 2 R3 2,41 146 0,81 3,81 1 2,03 5 45 0,8 3 R4 3,48 153 1,27 5,08 1,3 2,44 0,9 0,4 4S/4L R5 5,76 0,03 162 46 1,78 0 0,08 7,9 2,1 4,09 0 0,05 7 1,1 0,6 5 aRadius: 0,26 max.; 0,19 min. bFor information and comparison purposes only. aGauge penetration F
28、igure 2 Configuration Drive in normal 100 countersunk head BSISO14279:20024IS:97241 O2002(E) I SO 2002 All irthgs ersedevr 5Table 2 Dimensions Drive in normal 100 countersunk headH J Gauge penetration Screw normal shank or thread diameter aDrive code max. min. max. min. max. min. 1,6 1,52 1,19 0,89
29、0,48 0,711 0,305 2 R0 1,93 1,60 1,30 0,89 1,118 0,711 2,5 2,59 2,26 1,60 1,19 1,422 1,016 3 R1 2,97 2,64 1,98 1,57 1,803 1,397 3,5 3,91 3,58 2,18 1,60 1,905 1,321 4 4,29 3,96 2,57 1,98 2,286 1,702 5 R2 4,67 4,34 2,95 2,36 2,667 2,083 6 6,27 5,94 3,43 2,84 2,997 2,413 7 R3 6,81 6,48 3,96 3,38 3,531 2
30、,946 8 8,05 7,72 4,27 3,71 3,759 3,200 10 8,66 8,33 4,91 4,34 4,394 3,835 12 9,60 9,27 5,84 5,28 5,334 4,775 14 R4 10,77 10,44 7,01 6,45 6,502 5,944 16 13,11 12,52 7,14 6,48 6,299 5,639 18 14,15 13,56 8,18 7,52 7,341 6,680 20 R5 14,66 14,07 8,69 8,03 7,849 7,188 aNormal 100 countersunk head as defin
31、ed in ISO 5856. aGauge penetration Figure 3 Configuration Drive in reduced 100 countersunk head BSISO14279:20025IS:97241 O2002(E) 6 I SO 2002 All irthgs ersedevrTable 3 Dimensions Drive in reduced100 countersunk head H J Gauge penetration Screw normal shank or thread diameter aDrive code max. min. m
32、ax. min. max. min. 4 3,91 3,58 2,18 1,60 1,905 1,321 5 4,29 3,96 2,57 1,98 2,286 1,702 6 R2 4,42 4,09 2,69 2,11 2,413 1,829 7 5,92 5,59 3,07 2,49 2,642 2,057 8 R3 6,27 5,94 3,43 2,84 2,997 2,413 10 8,05 7,72 4,27 3,71 3,759 3,200 12 9,25 8,92 5,49 4,93 4,978 4,420 14 9,98 9,65 6,22 5,66 5,715 5,156
33、16 R4 10,77 10,44 7,01 6,45 6,502 5,944 18 13,11 12,52 7,14 6,48 6,299 5,639 20 R5 14,15 13,56 8,18 7,52 7,341 6,680 aReduced 100 countersunk head as defined in ISO 13921. aGauge penetration Figure 4 Configuration Drive in pan head BSISO14279:20026IS:97241 O2002(E) I SO 2002 All irthgs ersedevr 7Tab
34、le 4 Dimensions Drive in pan head H J Gauge penetration Screw normal shank or thread diameter aDrive code max. min. max. min. max. min. 1,6 1,73 1,40 1,09 0,69 0,914 0,508 2 R0 1,93 1,60 1,30 0,89 1,118 0,711 2,5 2,59 2,26 1,60 1,19 1,422 1,016 3 R1 2,72 2,39 1,73 1,32 1,549 1,143 3,5 3,91 3,58 2,18
35、 1,60 1,905 1,321 4 4,04 3,71 2,31 1,73 2,032 1,448 5 R2 4,80 4,47 3,07 2,49 2,794 2,210 6 6,55 6,22 3,71 3,12 3,277 2,692 7 R3 6,81 6,48 3,96 3,38 3,531 2,946 8 8,48 8,15 4,72 4,17 4,216 3,658 10 9,60 9,27 5,84 5,28 5,334 4,775 12 R4 10,39 10,06 6,63 6,07 6,121 5,563 aPan head as defined in ISO 320
36、2. BSISO14279:20027IS:97241 O2002(E) 8 I SO 2002 All irthgs ersedevrBibliography 1 ISO 1101: 1) , Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out 2 ISO 14280:2002, Aerospace Drivers, ribbed, for internal cruciform ribbed or unrib
37、bed drives Metric series 3 ISO 14281:2002, Aerospace Gauges, for internal cruciform ribbed or unribbed drives Metric series 1) To be published. (Revision of ISO 1101:1983) BSISO14279:20028BS ISO 14279:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independ
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