ASD-STAN PREN 3435-1993 Aerospace Series Nuts Anchor Self-Locking Floating Two Lug Reduced Series with Counterbore in Heat Resisting Steel MoS2 Lubricated Classification 1 100 MPa .pdf

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1、(EN *PREN*3435 73 m 3404587 0045634 OTb W Edition approved for publication 199341 -29 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months C3 Chairman after the date of publication to AECMA Technopolis - 1 75. rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FR

2、ANCE Mr. Arena prEN 3435 Edition P 1 January 1993 EDITE PAR LASSOCIATION EUROPCENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 CORRIGENDUM 1993 - 05 - IO ENGLISH VERSION Aerospace series Nuts, ancho

3、r, self-locking, floating, two lug, reduced series, with counterbore, in heat resisting steel, Mos2 lubricated Classification : 1 I O0 MPa (at ambient temperature) / 31 5 OC Srie arospatiale Luft- und Raumfahrt crous river, freinage interne, flottants, double patte, srie rduite, en acier rsistant ch

4、aud, lubrifis Mos2 Classification : 1 100 MPa ( temprature ambiante) / 31 5 OC Annietmuttern, selbstsichernd, beweglich, beiderseitiger verkrzter Flansch, avec chambrage, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2geschmiert Klasse : 1 100 MPa (bei Raumtemperatur) / 315 OC I I Repla

5、ce page 3 of the previous edition by the attached page 3 modified as follows : Footnote I) is changed to : Corresponds to strength class of the associated bolt, the 100 per cent load of which it is able to withstand, when tested at ambient temperature, without breaking or cracking. I I Note : prEN 3

6、435, Edition P I, January 1993, has been distributed by circular AECMNBNAE no 55383 dated 1993-0 1-27. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PREN*3435 73 3404587 0040025 041 Edition approved for publication 1993-01-29 A. E

7、. C. M .A. STAN DARD prEN 3435 NORME A.E.C.M.A. Edition P 1 A.E.C.M.A. NORM January 1993 DIT PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 Comments should be sent within six

8、months after the date of publication decision A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE UDC : Descriptors : ENGLISH VERSION Aerospace series Nuts, anchor, self-locking, floating, two lug, reduced series, with counter bore, in heat resisting ste

9、el, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Luft- und Raumfahrt crous river, freinage interne, flottants, double patte, srie rduite, en acier rsistant chaud, lubrifis Mos2 ( temprature ambiante) I 31 5 OC Annietmuttern, selbstsichernd, beweglich,

10、 beiderseitiger verkrzter Flansch, avec chambrage, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoSp-geschmiert (bei Raumtemperatur) I315 OC Classification : 1 100 MPa Klasse : 1 100 MPa This “Aerospace Series“ pre-standard has been drawn up under the responsibility of AECMA (Association

11、Europenne des Constructeurs de Matriel Arospatiall. It is published 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

12、content shall not be changed to an extent that interchangeability 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 w

13、ill be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. Nota -Extra copies can be supplied by B.NA.E. - Technopolis 54 - 199, rue JeanJacques Rousseau - 92138 ISSY-LESMZIUUNEAUX CEDEX C3 Chairman Mr. ARENA 0 aecma 1993 COPYRIGHT Association Europ

14、eene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENn3435 93 = 3404589 O040026 TBB H prEN 3435 Page 3 1 scop This standard specifies the characteristics of two lug, reduced series, counterbored floating anchor nuts, with a self-locking feature achieved by for

15、ming the upper portion out-of-round, in heat resisting steel, Mos2 lubricated. Classification : 1 1 O0 MPa I 31 5 OC 2, 2 Normative references IS0 5855-2 IS0 5858 IS0 7332 IS0 8788 EN 2000 EN 2398 EN 2399 EN 2424 EN 2491 EN 3042 EN 3638 EN 3639 EN 3816 TR 3791 Aerospace - MJ threads - Part 2 : Limit

16、 dimensions for bolts and nuts Aerospace - Self-locking nuts with maximum operating temperature less than or equal to 425 OC - Procurement specification Metric fasteners for aerospace construction - Nuts, anchor, self-locking, floating, two lug, reduced series, with counterbore - Strength classifica

17、tion 1 100 MPa - Maximum operating temperature 235 OC Aerospace - Fasteners - Tolerances of form and position for nuts Aerospace 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 bo

18、lts - D I25 mm - Aerospace series 31 Heat resisting steel FE-PA92-HT - Rm 2 900 MPa - Bars for forged bolts - D I25 mm - Aerospace series 31 Aerospace series - Identification marking of standard fasteners 31 Aerospace series - Molybdenum disulphide dry lubricants - Coating methods 41 Aerospace serie

19、s - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Heat resisting steel FE-PA92HT - Solution treated - Sheet and strip - as 3 mm4) Aerospace series - Heat resisting steel FE-PA92HT, cold worked and softened - Bars and wires for continuous cold forging or extru

20、sion of fasteners - 3 mm 5 D S 30 mm - 900 MPa 5 Rm 5 1 100 MPa 4, Aerospace series - Corrosion resisting steel FE-PA15 - Bars for machined bolts - D I 50 mm - Softened plus straightened plus ground 4, Aerospace series - Materials for all metal self-locking nuts and thin wall inserts of temperature

21、classes I425 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 its original characteristics, afte

22、r 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 technical report at the date of pub

23、lication of this standard Previous page is blank COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PREN*3435 93 3404589 0040027 914 M prEN 3435 Page 4 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances

24、are : in conformity with IS0 7332, 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 Threaded element : EN 2398, EN 2399, EN 3638, EN 3639 or TR 3791 Cage : EN 3638 or EN 3816 3.

25、3 Surface treatment EN 2491, thickness not specified Configuration - Dimensions - Masses COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PREN*3435 93 3404589 0040028 1950 = 1 Remove sharp edges 0,l to 0,4 Yr+ K I 5 I prEN 3435 Page

26、5 Y-Y Threaded element Form out-of-round in this area to achieve self-locking 2)- X 1)These values in micrometres apply before surface treatment. The values do not appiy to threads and sheared edges the surface texture of which will be achieved by usual manufacturing methods. 2)Tooling marks are per

27、mitted 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. I COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed b

28、y Information Handling ServicesCEN PRENs3435 93 3404589 0040029 797 Description block prEN 3435 Page 6 Identity block 4 Designation EXAMPLE : Diameter code (see table 1) w NOTE : If necessary, the originator code 19005 shall be placed between the description block and the identity block. 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