1、BRITISH STANDARD AEROSPACE SERIESBS EN3626:2006Nuts, hexagon, self-locking in steel, cadmium plated, MoS2 lubricated Classification: 1 100 MPa (at ambient temperature)/235 CThe European Standard EN 3626:2006 has the status of a British StandardICS 49.030.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43
2、g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3626:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006I
3、SBN 0 580 48553 6National forewordThis British Standard is the official English language version of EN 3626:2006. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, which has the responsibility to: A list of organizations r
4、epresented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Inde
5、x”, 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. Users are responsible for its correct application. Compliance with a British Standard does not of itself confe
6、r 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 change, and keep UK interests informed; monitor related international and European developments and promulgate th
7、em in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEA
8、N STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3626 July 2006 ICS 49.030.30 English Version Aerospace series - Nuts, hexagon, self-locking in steel, cadmium plated, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature)/235 C Srie arospatiale - Ecrous hexagonaux, freinage interne, en ac
9、ier, cadmis, lubrifis MoS2 - Classification: 1 100 MPa ( temprature ambiante)/235 C Luft- und Raumfahrt - Sechskantmuttern, selbstsichernd, aus Stahl, verkadmet, MoS2-geschmiert - Klasse: 1 100 MPa (bei Raumtemperatur)/235 C This European Standard was approved by CEN on 9 March 2006. CEN members are
10、 bound to comply with the CEN/CENELEC Internal Regulations which stipulate 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 t
11、he Central Secretariat or to any CEN member. This European Standard exists 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 sta
12、tus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
13、a, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide
14、for CEN national Members. Ref. No. EN 3626:2006: E2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Required characteristics 5 4 Designation .7 5 Marking 7 6 Technical specification.7 EN 3626:20063 Foreword This European Standard (EN 3626:2006) has been prepared by the AeroSpace and
15、Defence Industries Asso-ciation of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-ceived the approval of the National Associations and the Official Services of the member countries of ASD, prior to its
16、 presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2007, and conflicting national standards shall be withdrawn at the latest by January 2007. Attention is drawn to the p
17、ossibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countrie
18、s are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
19、Switzer-land and the United Kingdom. EN 3626:20064 1 Scope This standard specifies characteristics of self-locking hexagonal nuts, with flange, in steel, cadmium plated, MoS2lubricated. Classification: 1 100 MPa1)/ 235 C2)2 Normative references The following referenced documents are indispensable fo
20、r the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2133, Aerospace series Cadmium plating of steels, with specified tensile strength 1 450 MPa, copper,
21、 copper alloys and nickel alloys EN 2424, Aerospace series Marking of aerospace products EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 9100, Aerospace series - Quality management systems - Requirements (based on ISO 9001:2000) and Quality systems - Model for quali
22、ty assurance in design, development, production, installation and servicing (based on ISO 9001:1994) EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace stan-dard parts ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 5858, Aeros
23、pace Self-locking nuts with maximum operating temperature less than or equal to 425 C Procurement specification ISO 7995, Aerospace Nuts, hexagonal, self-locking, with MJ threads, classifications: 1 100 MPa (at ambi-ent temperature)/315 C and 1 100 MPa (at ambient temperature/425 C Dimensions ISO 87
24、88 Aerospace Fasteners Tolerances of form and position TR 3791, Aerospace series Materials for all metal self-locking nuts and thin wall insert of temperature classes 425 C3)1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cra
25、cking when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the cadmium plating. 3) Published A
26、SD Technical Report at the date of publication of this standard. EN 3626:20065 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are: in conformity with ISO 7995, expressed in millimetres and apply after cad-mium plating but before MoS
27、2lubricating. Details of form not stated are at the manufacturers option. 3.2 Tolerances of form and position See ISO 8788. 3.3 Materials See TR 3791. 3.4 Surface treatments EN 2133, 5 m min. on threads and all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces, a contin
28、uous deposit shall be present. EN 2491, thickness not specified. EN 3626:20066 a Remove sharp edges 0,1 to 0,4 Key 1 Marking 2 90 to 120 3 0 to 50 4 Form out-of-round in this area to achieve the self-locking torque requirementb5 Thread 6 Chamfer, radius or broken edge aThese values in micrometres ap
29、ply before surface treatment. They do not apply to threads and sheared edges the surface texture of which will be as achieved by usual manufacturing methods. bTooling marks are permitted in this area. cAll forms of entry (chamfer or radius) are permissible within these limiting dimensions. Figure 1
30、Table 1 EbFbG H K M NcQ Diameter code Threadamin. max. max. min. min. min. max. min. Massd030 MJ3x0,5-4H6H 4,2 4 6 3 5,3 0,4 1,2 3,8 3,2 0,35 040 MJ4x0,7-4H6H 5,3 5 7,4 4 6,7 0,5 1,5 4,8 4,2 0,7 050 MJ5x0,8-4H6H 6,5 6 9,1 5 8,3 0,6 2 5,8 5,2 1,05 060 MJ6x1-4H5H 7,6 7 10,6 5,4 9,8 0,7 2,3 7,1 6,3 1,5
31、 070 MJ7x1-4H5H 8,7 8 h12 12,1 6,3 11,3 0,8 2,7 8,1 7,3 2,45 080 MJ8x1-4H5H 10,9 10 13,6 7,2 12,8 0,9 3,2 9,1 8,3 3,6 100 MJ10x1,25-4H5H 13,2 12 16,8 9 15,8 1,1 3,8 11,1 10,3 6,25 120 MJ12x1,25-4H5H 15,5 14 19,9 10,8 18,8 1,4 4,5 13,5 12,3 10,35 140 MJ14x1,5-4H5H 17,9 16 h13 23 12,6 21,9 1,7 5 15,1
32、14,3 13,2 aIn accordance with ISO 5855-2. In the self-locking zone the tolerances apply before forming out-of-round. bThese dimensions apply before forming out-of-round, but finished nuts shall fit a standard socket wrench. cWrench pad engagement dApproximate values (kg/1 000 pieces), given for info
33、rmation purposes only EN 3626:20067 4 Designation EXAMPLE Description block Identity block NUT EN3626-050 Number of this standard Diameter code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style N. See Figure
34、 1. 6 Technical specification ISO 5858, except for: Approval of manufacturers: EN 9100; Qualification of products: EN 9133. EN 3626:2006BS EN 3626:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standard
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