1、BRITISH STANDARD AEROSPACE SERIES BSEN 3722:1995 Shank nuts, self-locking, in heat resisting steel FE-PA92HT (A286), MoS 2coated Classification: 1100MPa (at ambient temperature)/425 C The European Standard EN3722:1995 has the status of a British StandardBSEN3722:1995 This British Standard, having be
2、en prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15November1995 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment91/76463 DC ISBN 0 58
3、0 24491 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, upon which the following bodies were represented: Association of Electronics, Telecommunications and Business Eq
4、uipment Industries British Industrial Fasteners Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN3722:1995 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 S
5、cope 3 2 Normative references 3 3 Required characteristics 3 4 Designation 5 5 Marking 5 6 Technical specification 5 Figure 1 4 Table 1 5 List of references Inside back coverBSEN3722:1995 ii BSI 12-1999 National foreword This British Standard has been prepared by Technical Committee ACE/12 and is th
6、e English language version of EN3722:1995 Aerospace series Shank nuts, self-locking, in heat resisting steel FE-PA92HT (A286) MoS 2coated Classification:1100MPa (at ambient temperature)/425 C, published by the European Committee for Standardization (CEN). EN3722:1995 was produced as a result of inte
7、rnational discussions in which the United Kingdom took an active part. Cross-reference There are no British Standards corresponding to the European Standards referred to in the text. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards
8、 are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Publication referred to Corresponding British Standard ISO5855-2:1988 BS6293 Aerospace. MJ threads Part2:1994 Limit dimensions for bolts and nuts Summary of p
9、ages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to6, an inside back cover and 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 ins
10、ide front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN3722 July1995 ICS49.040.20 Descriptors: Aircraft industry, self-locking nut, heat resistant steel, coating, classification, dimension, dimensional tolerance, designation English version Aerospace series Shank nuts, self-locking in h
11、eat resisting steel FE-PA92HT (A286), MoS 2coated Classification:1100MPa (at ambient temperature)/425 C Srie arospatiale crous sertir freinage interne, en acier rsistant chaud FE-PA92HT (A286), revtus MoS 2 Classification:1100MPa ( temprature ambiante)/425 C Luft- und Raumfahrt Einnietmuttern, selbs
12、tsichernd, aus hochwarmfestem Stahl FE-PA92HT (A286), MoS 2beschichtet Klasse:1100MPa (bei Raumtemperatur)/425 C This European Standard was approved by CEN on1995-03-18. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
13、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 exists in three official versions (English, Fre
14、nch, 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 bodies of Austria, Belgium, Denmark, Finland,
15、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 Normung Central Secretariat: rue de Stassart 36, B-1050 Brussel
16、s 1995 Copyright reserved to CEN members Ref. No. EN3722:1995 EEN3722:1995 BSI 12-1999 2 Foreword This British Standard has been prepared by the European Association of Aerospace Manufacturers(AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this standa
17、rd has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation toCEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, a
18、t the latest by January1996, and conflicting national standards shall be withdrawn at the latest by January1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Icel
19、and, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN3722:1995 BSI 12-1999 3 1 Scope This standard specifies the characteristics of self-locking shank nuts in FE-PA92HT, MoS 2coated, for aerospace applications. Classification:1100MPa 1) /425
20、 C 2) 2 Normative references 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 r
21、evisions 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. ISO5855-2, Aerospace MJ threads Part2: Limit dimensions for bolts and nuts. EN2399, Heat resi
22、sting steel FE-PA92-HT R m U 900MPa Bars for forged bolts Dk 25mm Aerospace series 3) . EN2424, Aerospace series Marking of aerospace products 3) . EN2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods 4) . EN3639, Aerospace series Heat resisting alloy FE-PA2601 Softened and
23、cold worked Wire for forged fasteners Dk 15mm 900MPak R m k 1100MPa 5) . EN3752, Aerospace series Nuts, self-locking, in heat resisting steel FE-PA92HT (A286), MoS 2coated Classification:1100MPa/425 C Technical specification 4) . 3 Required characteristics 3.1 Configuration Dimensions Tolerances Mas
24、ses See Figure 1 and Table 1. Dimensions and tolerances are in millimetres. They apply before MoS 2coating. 3.2 Materials EN2399 or EN3639 3.3 Surface treatment EN2491 1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking
25、when tested with a bolt of a higher strength class. 2) Maximum test temperature of the parts 3) Published as AECMA Standard at the date of publication of this standard 4) In preparation at the date of publication of this standard 5) Published as AECMA Prestandard at the date of publication of this s
26、tandardEN3722:1995 4 BSI 12-1999 Figure 1 EN3722:1995 BSI 12-1999 5 Table 1 4 Designation EXAMPLE: NOTEIf necessary, the code19005 shall be placed between the description block and the identity block. 5 Marking EN2424, style A, as indicated on Figure 1. 6 Technical specification EN3752 Thread a C E
27、H J L P S T Z Mass kg/1000 parts Code Designation 0,1 0,25 h14 nom. Tol. 0,1 0,25 max. 050 MJ5 0,8-4H6H 7 13 7 5,2 1,8 0,10 6,5 9,5 2,4 8,5 2,70 060 MJ6 1-4H5H 8 14 8 6,2 7,5 10,5 9,5 3,35 070 MJ7 1-4H5H 9 16 9 7,2 2,8 8,5 11,5 3,4 10,5 4,16 080 MJ8 1-4H5H 10 17 10 8,2 3,2 0,15 9,5 12,5 3,9 11,5 5,4
28、0 a In accordance with ISO5855-2. In the self-locking zone, the tolerances apply before forming out-of-round. + 0,1 0 0 0,16 blankBSEN3722:1995 BSI 12-1999 List of references See national foreword.BS EN 3722:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the inde
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