1、CEN PREN*2865 93 3404589 0040020 5bT W A. E. C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 2865 Edition P 1 February 1993 EDITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47
2、.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Nuts, anchor, self-locking, floating, two lug, with counterbore, in heat resisting steel, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Luft- und Raumfahrt Ecrous river, freinage interne, f
3、lottants, double patte, en acier rsistant chaud, lubrifis Mos2 Classification : 1 100 MPa ( temprature ambiante) 1315 OC Annietmuttern, selbstsichernd, beweglich, beiderseitiger Flansch, avec chambrage, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, Mos2-geschmiert Klasse : 1 100 MPa (bei R
4、aumtemperatur) I315 OC 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 conce
5、rned 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, ph ysicaily or functionally, without re-identification of the standard. After examination and si
6、gnature 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. Nota -Exira copies can be supplied by B.NA.E. - Technopolis 54 -
7、 199, rue Jeadacques Rousseau - 92138 ISSY-LESMOULINEAUX CEDU( Comments should be sent within six months C3 Chairman Edition approved for publication after the date of publication decision 1993-02-26 A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr
8、. ARENA I I aecma 1993 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENu28b5 73 3404587 0040021 4Tb = prEN 2865 Page 3 1 Scope This standard specifies the characteristics of two lug, counterbored floating anchor nuts, with a sel
9、f-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, Mos2 lubricated. Classification : 1 100 MPa / 315 OC 2, 2 Normative references IS0 3209 IS0 5855-2 IS0 5858 IS0 8788 EN 2000 EN 2398 EN 2399 EN 2424 EN 2491 EN 3042 EN 3638 EN 3639 EN 3816 TR 3791 Aerospac
10、e - Nuts, anchor, self-locking, floating, two lug, with counterbore, with MJ threads, coated or uncoated, classificaiton 1 1 O0 MPa / 235 OC, 1 1 O0 MPa / 31 5 OC or 1 100 MPa / 425 OC - Dimensions Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts Aerospace - Self-locking nuts wi
11、th 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 manufacturers Heat resisting steel FE-PA92-HT -
12、 Rm 2 900 MPa - Bars for machined bolts - D 5 25 mm - Aerospace series 31 Heat resisting steel FE-PA92-HT - Rm Z 900 MPa - Bars for forged bolts - D I25 mm - Aerospace series 3, Aerospace series - Identification marking of standard fasteners 31 Aerospace series - Molybdenum disulphide dry lubricants
13、 - Coating methods 41 Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Heat resisting steel FE-PA92HT - Solution treated - Sheet and strip - as3mm4) Aerospace series - Heat resisting steel FE-PA92HT, cold worked and softened - Bars and wires f
14、or continuous cold forging or extrusion of fasteners - 3 mm I D I 30 mm - 900 MPa I Rm I 1 100 MPa 4, Aerospace series - Corrosion resisting steel FE-PA15 - Sheets and strips for nuts (cages) - Thickness I 3 mm - Softened plus cold drawn 41 Aerospace series - Materiais for all metal self-locking nut
15、s and thin wall inserts of temperature classes S 425 OC 5, 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 alterati
16、on to its 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 41 In preparation at the date of publication of this standard 5) Published as A
17、ECMA technical 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*28b5 93 M 3404589 0040022 332 M prEN 2865 Page 4 3 Required characteristics 3.1 Configurat
18、ion - Dimensions - Masses See figure 1 and table 1. Dimensions and tolerances are : in conformity with IS0 3209, expressed in millimetres and apply before MOS, lubrication. Form and position tolerances shall be in conformity with IS0 8788. 3.2 Materials Threaded element : EN 2398, EN 2399, EN 3638,
19、EN 3639 or TR 3791 Cage : EN 3638 or EN 3816 3.3 Surface treatment EN 2491, thickness not specified COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesCEN PRENx28bS 93 3404589 0040023 279 W Diameter code Remove sharp edges 0,l to 0,4 Threa
20、d I E F G HJ2)K L MN3)P RS 9 ,i“ /A 030 ._ 040 050 O60 080 . 100 noat inclusive min. MJ3x0.5-4H6H ,7 -4) MJ40.7-4H6H 4.4 MJ50.8-4H6H 9.5 19 5,5 MJ6x1-4H5H 11 22 6.5 MJ101,25-4H5H 13 26 10.5 - - MJ8x1-4H5H 8.5 Y -Y u - Qualification of products : see EN 3042. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services
