AECMA PREN 3537-1993 Aerospace Series Nuts Anchor Self-Locking Fixed Two Lug with Counterbore in Heat Resisting Steel MoS2 Lubricated Classification 1 100 MPa (at Ambient Temperat.pdf

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1、(EN *PREN*3537 93.- 3404589 0045b40 3TT AECMA STANDARD NORME AECMA AECMA NORM prEN 3537 Edition P 1 January 1993 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1 I 47.36.98.76 CORRIGE

2、NDUM 1993 - 05 - 10 ENGLISH VERSION Aerospace series Nuts, anchor, self-locking, fixed, two lug, with counterbore, in heat resisting steel, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) I 31 5 OC Srie arospatiale Luft- und Raumfahrt fixes, double patte, beiderseitiger Flansch,

3、crous river, freinage interne, Annietmuttern, selbstsichernd, avec chambrage, mit zylindrischer Aussenkung, en acier rsistant chaud, lubrifis Mos2 aus hochwarmfestem Stahl, MoS2-geschmiert Classification : 1 100 MPa ( temprature ambiante) I 31 5 OC Klasse : 1 100 MPa (bei Raurntemperatur) I 31 5 OC

4、Replace page 3 of the previous edition by the attached page 3 modified as follows : Footnote 1) is changed to : Corresponds to strength class of the associated bolt, the 1 O0 per cent load of which it is able to withstand, when tested at ambient temperature, without breaking or cracking. Note : prEN

5、 3537, Edition P 1, January 1993, has been distributed by circular AECMABNAE no 55383 dated 1993-0 1-27. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacaues Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX C3 Chairman I Comments should be sent within six months after

6、the date of oublication to I Edition approved for publication 1993-0 1 -29 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr. Arena I I aecma 19! COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Serv

7、icesCEN PRENa3537 93 m 3404589 0040030 409 m Edition approved for publication Comments should be sent within six months after the date of publication decision A.E.C.M .A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM C3 Chairman prEN 3537 Edition P 1 January 1993 DIT PAR LASSOCIATION EUROPENNE DES CONST

8、RUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Nuts., anchor, self-locking , fixed, two lug, with counterbore, in heat resisting steel, Mos2 lubricated Classi

9、fication : I 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Luft- und Raumfahrt fixes, double patte, beiderseitiger Flansch, crous river, freinage interne, Annietmuttern, selbstsichernd, avec chambrage, mit zylindrischer Aussenkung, en acier rsistant chaud, lubrifis Mos2 ( temprature amb

10、iante) I315 OC aus hochwarmfestern Stahl, Mos,-geschmiert (bei Raumtemperatur) I315 OC Classification : 1 100 MPa Klasse : 1 180 MPa This “Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatiall. It is publishe

11、d on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability

12、is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPSI and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Com

13、mittee for Standardization) for final vote. 1993-01-29 A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr. ARENA 0 aecma 1993 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENr353

14、7 93 3404589 004003L 345 prEN 3537 Page 3 1 Scope This standard specifies the characteristics of two lug, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, Mos2 lubricated. Classification : 1 100 MPa I / 315 OC *)

15、 2 Normative references IS0 3223 ISO 5855-2 IS0 5858 ISO 8788 EN 2000 EN 2398 EN 2399 EN 2424 EN 2491 EN 3042 EN 3638 EN 3639 TR 3791 Aerospace - Nuts, anchor, self-locking, fixed, two lug, with counterbore, with MJ threads, coated or uncoated, classification 1 100 MPa / 235 OC, 1 100 MPa I315 OC or

16、 1 1 O0 MPa / 425 OC - Dimensions Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts Aerospace - Self-locking nuts with maximum operating temperature less than or equal to 425 OC - Procurement specification Aerospace - Fasteners - Tolerances of form and position for nuts Aerospace

17、 series - Quality assurance - EN aerospace products - Approval of the quality systems of manufacturers Heat resisting steel FE-PA92-HT - Rm 2 900 MPa - Bars for machined bolts - D 5 25 mm - Aerospace series 3, Heat resisting steel FE-PA92-HT - Rm 2 900 MPa - Bars for forged bolts - D I 25 mm - Aeros

18、pace series 31 Aerospace series - Identification marking of standard fasteners 31 Aerospace series - Molybdenum disulphide dry lubricants - Coating methods 41 Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Heat resisting steel FE-PA92HT - So

19、lution treated - Sheet and strip - as3mm41 Aerospace series - Heat resisting steel FE-PA92HT cold worked and softened - Bars and wires for continuous cold forging or extrusion of fasteners - 3 mml D5 30 mm -900 MPa I Rm Il 100 MPa4 Aerospace series - Materials for all metal self-locking nuts and thi

20、n wall inserts of temperature classes 5 425 OC 51 1 ) The strength class of the nut corresponds to the minimum stress which the nut is able to withstand, at ambient temperature, without breaking or cracking. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to it

21、s original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the surface treatment. 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 tec

22、hnical report at the date of publication of this standard Previous page is blank COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PREN*3537 93 = 3404589 0040032 283 prEN 3537 Page 4 3 Required characteristics 3.1 See figure 1 and tab

23、le 1. Configuration - Dimensions - Masses Dimensions and tolerances are : in conformity with IS0 3223, expressed in millimetres and apply before MOS, lubrication. Form and position tolerances shall be in conformity with IS0 8788 and those specified in table 1. 3.2 Materials EN 2398, EN 2399, EN 3638

24、, EN 3639 or TR 3791 3.3 Surface treatment EN 2491, thickness not specified COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENx3537 93 3404589 O040033 118 = prEN 3537 Page 5 Remove sharp edges 0,l to 0,4 Marking Y-Y area io achiev

25、e the Atternatives : countersunk rivet holes (when specified by purchaser) may be dimpled or cut countersunk (at manufacturers option). 1)These values in micrometres apply before surface treatment. The values do not apply to threads and sheared edges the surface texture of which will be achieved by

26、usual manufacturing methods. 2)Tooling marks are permitted in this area. 3) Details of form not stated are at the manufacturers option. Figure 1 3, Table 1 2) Is to sharp corners (chamfered) or point of tangency (radiused). 3) Is applicable at the rivet hole location. 4) Diameter code 030 does not h

27、ave a counterbore. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesI CEN PRENa3537 93 = 3404589 0040034 054 prEN 3537 Page 6 4 Designation EXAMPLE : Description block I Identity block NUT I EN3537-0 i0 - Hole code (see table 2) I Diamet

28、er code (see table 1) NOTE : If necessary, the originator code 19005 shall be placed between the description block and the identity block. Table 2 K Dimpled or countersunk rivet holes 5 Marking EN 2424, style N. See figure 1 6 Technical specification IS0 5858 except for : - Approval of manufacturers : see EN 2000 ; - Qualification of products : see EN 3042. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services