ASD-STAN PREN 3538-1993 Aerospace Series Nuts Anchor Self-Locking Fixed Two Lug Reduced Series with Counterbore in Heat Resisting Steel MoS2 Lubricated Classification 1 100 MPa (.pdf

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1、CEN *PREN*3538 93 M 3404589 0045646 818 Edition approved for publication 1993-01-29 AECMA STANDARD NORME AECMA AECMA NORM C3 Chairman Mr. Arena Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, nie Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Ced

2、ex - FRANCE prEN 3538 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) 47.36.98.76 CORRIGENDUM 1993 - 05 - IO ENGLISH VERSION Aerospace series Nuts, anchor,

3、self-locking, fixed, two lug, reduced series, with counterbore, in heat resisting steel, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Luft- und Raumfahrt crous river, freinage interne, fixes, double patte, srie rduite, en acier rsistant chaud, lubrifi

4、s Mos2 Annietmuttern, selbstsichernd, beiderseitiger verkrzter Flansch, avec chambrage, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, Mos2-geschmiert Classification : 1 100 MPa ( temprature ambiante) I 31 5 OC Klasse : 1 100 MPa (bei Raumtemperatur) / 315 OC Replace page 3 of the previous

5、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. Note : prEN 3538, Edition P I, January 1993

6、, has been distributed by circular AECMNBNAE n O 55383 dated 1993-01-27. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENS3538 93 3404589 0040035 T90 Edition approved for publication 1993-01 -29 A. E. C. M .A. STAN DARD NORME A.

7、E.C.M.A. A.E.C.M.A. NORM Comments should be sent within six months C3 Chairman after the date of publication decision A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr. ARENA prEN 3538 Edition P 1 January 1993 EDITE PAR LASSOCIATION EUROPEENNE DES C

8、ONSTRUCTEURS 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, reduced series, with counterbore, in heat resisting steel, Mos2

9、 lubricated Classification : 1 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Luft- und Raumfahrt crous river, freinage interne, fixes, double patte, srie rduite, en acier rsistant chaud, lubrifis Mos2 Classification : 1 100 MPa ( temprature ambiante) I315 OC Annietmuttern, selbstsichern

10、d, beiderseitiger verkrzter Flansch, avec chambrage, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert Klasse : 1 100 MPa (bei Raumtemperatur) I315 OC This “Aerospace Series“ pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeu

11、rs de Matriel Arospatial). 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 content shall not be chan

12、ged 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 will be submitted as a dra

13、ft European Standard to CEN (European Committee for Standardization) for final vote. 0 aecma 1993 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PREN*3538 93 m 3404589 O040036 927 m prEN 3538 Page 3 1 Scope This standard specifies

14、the characteristics of two lug, reduced series, 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 1 I315 OC 21 2 Normative references IS0 3225 IS0 5855-2 IS0 5858 IS0 87

15、88 EN 2000 EN 2398 EN 2399 EN 2424 EN 2491 EN 3042 EN 3638 EN 3639 TR 3791 Aerospace - Self-locking, fixed, two lug anchor nuts, reduced series, with counterbore, strength classification 1 100 MPa and maximum operating temperature 235 OC Aerospace - MJ threads - Part 2 : Limit dimensions for bolts a

16、nd 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 series - Quality assurance - EN aerospace products - Approval of the quality systems of manufac

17、turers Heat resisting steel FE-PA92-HT - Rm 2 900 MPa - Bars for machined bolts - D I 25 mm - Aerospace series 3, 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 3, Aerospace serie

18、s - Molybdenum disulphide dry lubricants - Coating methods 4, Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Heat resisting steel FE-PA92HT - Solution treated - Sheet and strip - a3mm4) Aerospace series - Heat resisting steel FE-PA92HT cold

19、worked and softened - Bars and wires for continuous cold forging or extrusion of fasteners - 3 mm I D S 30 mm - 900 MPa I Rm I 1 100 MPa 41 Aerospace series - Materials for all metal self-locking nuts and thin wall inserts of temperature classes 425 OC 5, 1) The strength class of the nut corresponds

20、 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, after ambient temperature has been restored. The maximum temperatur

21、e 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 publication of this standard Previous page is blank COPYRIGHT Asso

22、ciation Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENx3538 93 3404589 OOY0037 863 M prEN 3538 Page 4 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are : in conformity with IS0 3225, expressed in millimetres and

23、 apply before Mos2 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, EN 3639 or TR 3791 3.3 Surface treatment EN 2491, thickness not specified Configuration - Dimensions - Masses COPYRIGHT Associati

24、on Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENx3538 93 3Li04589 0040038 7TT W Diameter Thread l) E F G H J2 K L M N 3, R code min. min. max. max. Max. max. max. aux. 040 MJ40,7-4H6H 6 12 4,4 22 6,2 8 17,2 5,8 1,1 2,5 060 MJGxl-4H5H 8 16 6,5 2,7

25、87 10 22,2 8,l 1,35 3 050 MJ50,8-4H6H 7 14 5,5 2,4 7,3 9 19,2 6,9 1) 6,3/ 71 Remove sharp edges 0,l to 0,4 Mass kgll O00 pieces approx. 0,95 1,10 1,80 Marking prEN 3538 Page 5 o I -round in ihio achieve the 1)These values in micrometres apply before surface treatment. The values do not apply to thre

26、ads and sheared edges the surface texture of which will be achieved by 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 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceL

27、icensed by Information Handling ServicesCEN PREN*3536 73 m 3404589 DOY0039 b3b m prEN 3538 Page 6 4 Designation EXAMPLE : Description block Identity block EN3538-060 Number of this standard Diameter code (see table 1 I NOTE : If necessary, the originator code 19005 shall be placed between the descri

28、ption 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

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