1、CEN *PREN*28b2 93 W 3404589 0045636 080 W Edition approved for publication 1993-02-26 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, rue JeanJacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE prEN 2862
2、 Edition P 1 February 1993 EDITE PAR LASSOCIATION EUFIOPEENNE 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 - 10 ENGLISH VERSION Aerospace series Nuts, anchor, self-locking, fixed
3、, 90 corner, with counterbore, in alloy steel, cadmium plated, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) / 235 OC Srie arospatiale crous river, freinage interne, fixes, dangle 90, avec chambrage, en acier alli, cadmis, lubrifis Mosz Classification : 1 100 MPa ( temprature a
4、mbiante) I235 OC Luft- und Raumfahrt Annietmuttern, selbstsichernd, 90 Eckflansch, mit zylindrischer Aussenkung, aus legiertem Stahl, verkadmet, Mosz-geschmiert Klasse : 1 100 MPa (bei Raumtemperatur) / 235 OC Replace page 3 of the previous edition by the attached page 3 modified as follows : Footno
5、te 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 2862, Edition P I, February 1993, has been distributed by circular AECMABNAE n O 55434 da
6、ted 7 993-02- 19. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINGX CEDEX C3 Chairman Mr. Arena I I 0 aecma 19: CEN PREN*28b2 93 3404589 0039967 T5b = Edition approved for publication A. E. C. M .A. STAN DARD NORME A.E.C.M.A.
7、 A.E.C.M.A. NORM Comments should be sent within six months C3 Chairman after the date of oublication decision prEN 2862 Edition P 1 February 1993 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex -
8、Tl. (1 1 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Nuts, anchor, self-locking, fixed, 909 corner, with counterbore, in alloy steel, cadmium plated, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) / 235 OC Srie arospatiale Luft- und Raumfahrt Ecrous river, f
9、reinage interne, fixes, dangle 90, avec chambrage, en acier alli, cadmis, lubrifis Mos2 ( temprature ambiante) 1235 OC Annietmuttern, selbstsichernd, 90 Eckflansch, mit zylindrischer Aussenkung, aus legiertem Stahl, verkadmet, MoS2-geschmiert (bei Raumtemperatur) 1235 OC Classification : 1 100 MPa K
10、lasse : I 100 MPa This “Aerospace Series“ pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs 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
11、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 is affected, physically or functionally, without re-identification of the standard. After examination and signatur
12、e of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. 1993-02-26 A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921
13、 38 Issy-les-Moulineaux Cedex - FRANCE Mr. ARENA I I aecma 1993 CEN PRENx2862 93 3404589 0039969 829 = e O O O prEN 2862 Page 3 1 scop This standard specifies the characteristics of 90 corner, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-ro
14、und, in alloy steel, cadmium plated, MOS, lubricated. Classification : 1 100 MPa / 235 OC 2, 2 Normative references IS0 3221 Aerospace - Nuts, anchor, self-locking, fixed, 90 corner, with counterbore, with MJ threads, coated or uncoated, classification 1 100 MPa / 235 OC, 1 100 MPa / 315 OC or 1 100
15、 MPa / 425 OC - Dimensions IS0 5855-2 Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts IS0 5858 IS0 8788 EN 2000 EN 2133 EN 2424 EN 2491 EN 2542 EN 2543 EN 3042 TR 3791 Aerospace - Self-locking nuts with maximum operating temperature less than or equal to 425 OC - Procurement sp
16、ecification Aerospace - Fasteners - Tolerances of form and position for nuts Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Cadmium plating of steels with maximum specified tensile strength equal to or less than 1 450 MPa and copper and
17、 copper alloys - Aerospace series 3, Aerospace series - Identification marking of standard fasteners 3, Aerospace series - Molybdenum disulphide dry lubricants - Coating methods 4, Aerospace series - Steel FE-PL43S - Annealed - Bar and wire - De .s 40 mm for prevailing torque nuts 5) Aerospace serie
18、s - Steel FE-PL43S - Annealed - Sheet and strip - 0,3 C; a I 2 mm for prevailing torque nuts 5, Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Materials for all metal self-locking nuts and thin wall inserts of temperature classes I425 OC 6,
19、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, after ambient temperatu
20、re 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 pre-standard at the date of publication of this standa
21、rd 6) Published as AECMA technical report at the date of publication of this standard Previous page is blank CEN PRENr2b2 93 3404589 0039970 540 = prEN 2862 Page 4 3 Required characteristics 3.1 Configuration - Dimensions - Masses See figure I and table I. Dimensions and tolerances are : in conformi
22、ty with IS0 3221, expressed in millimetres and apply after surface treatment but before MOS, lubrication. Form and position tolerances shall be in conformity with IS0 8788. 3.2 Materials EN 2542, EN 2543 or TR 3791 3.3 Surface treatment EN 2133, 5 pm minimum on threads and all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces a continuous deposit shall be present, plus EN 2491, thickness not specified. CEN PREN*i2862 93 W 3404589 0039971 487 D prEN 2862 Page 5 Remove sharp edges 0,l to 0,4 Y-Y Al tornat ives: couniorsun - Qualification of products : see EN 3042.
