1、AECMA STANDARD NORME AECMA AECMA NORM prEN 4083 Edition P 1 March 1995 Dn PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 ICs : Descriptors : ENGLISH VERSION Aerospace series Nu
2、ts, bihexagonal, self-locking, reduced height, with counterbore, in heat resisting steel, Mos2 lubricated Classification : 1 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Luft- und Raumfahrt crous bihexagonaux, freinage interne, hauteur rduite, avec chambrage, en acier rsistant chaud, l
3、ubrifis Mos2 Classification : 1 100 MPa ( temprature ambiante) I315 OC Zwlfkantmuttern, selbstsichernd, reduzierte Hhe, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, Mos2-geschmiert Klasse : 1 100 MPa (bei Raumtemperatur I 31 5 OC This “Aerospace Series“ Prestandard has been drawn up under
4、 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 Technical Committee folio wing comment by the Member countries. Subsequent to t
5、he publication of this Prestandard, 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 signature of the AECMA Standard Checking Centre INPS) and formal agreement of
6、the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX C 3 Cha
7、irman I Comments should be sent within six months after the date of publication to I Edition approved for publication 1995-03-31 M. Arena AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE I I aecma 199 COPYRIGHT Association Europeene Des Constructeurs de Ma
8、teriel AerospaceLicensed by Information Handling Services AECMA PRENU403 95 m 3032333 0008b33 bL2 m Page 3 prEN 4083 : 1995 1 Scope This standard specifies the characteristics of self-locking bihexagonal nuts, with reduced height and counterbore, in heat resisting steel, Mos2 lubricated. Classificat
9、ion : 1 1 O0 MPa ) / 31 5 OC *) 2 Normative references IS0 4095 IS0 5855-2 IS0 5858 IS0 8788 EN 2000 EN 2398 EN 2399 EN 2424 EN 2491 EN 3042 EN 3639 TR 3791 Fasteners for aerospace construction - Bi-hexagonal wrenching configuration Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nu
10、ts 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 system of manufacturers
11、 Heat resisting steel FE-PA92-HT - R, 900 MPa - Bars for machined bolts - D I 25 mm - Aerospace series 3, Heat resisting steel - FE-PA92-HT - R, 900 MPa - Bars for forged bolts - D I 25 mm - * Aerospace series 3, Aerospace series - Marking of aerospace products Aerospace series - Molybdenum disulphi
12、de dry lubricants - Coating methods 4, Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Heat resisting alloy FE-PA2601 - Softened and cold worked - Wire for forged fasteners - D I 15 mm - 900 MPa I R, I1 IO0 MPa 5, Aerospace series - lqlaterials for all metal se
13、lf-locking nuts and thin wall inserts of temperature classes I425 OC 6, 1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able
14、to withstand, without permanent alteration 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 4) In preparation at the date of public
15、ation of this standard 5) Published as AECMA Prestandard at the date of publication of this standard 6) Published as AECMA Technical Report at the date of publication of this standard 1 Previous page is blank COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Informat
16、ion Handling Services AECMA PREN*Y083 95 = LOL23LL 0008632 559 Page 4 prEN 4083 : 1995 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are expressed in millimetres and apply before Mos2 lubrication. Details of form not stated are at the manufacturers option. Config
17、uration - Dimensions - Masses 3.2 IS0 8788 Tolerances of form and position 3.3 .Materials EN 2398, EN 2399, EN 3639 or TR 3791 3.4 Surface treatment EN 2491, thickness not specified L. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesAEC
18、MA PREN*4083 95 1012311 O008633 475 I - 3,1 3,5 4 3 10,27 15,80 25,99 2,9 Page 5 prEN 4083 : 1995 160 180 200 220 Remove sharp edges 0,l to 0,4 I MJ161,5-4H5H 19 26 18,2 16,5 24,9 1,9 4,7 MJ181,5-4H5H 22 29,l 20,2 18,5 28 2,l 5,6 MJ201,5-4H5H 24 32,3 22,2 20,5 31,2 2,3 6.8 MJ221,5-4H5H 27 35,4 23,7
19、22,5 34.3 2.5 8,3 x-x I - 28“ to5O“ ,- r- Form out-of-roundin this area to achieve the sekf-locking torque requirement . 1) These values in micrometres apply before surface treatment. They do not ticply to threads the 2) Also applies to lower chamfer. Ali forms of entry (chamfer or radius) optional
20、within these limiting dimensions. 3) Bihexagonal configuration in accordance with IS0 4095 over length N. 4) Wrench pad engagement 5) Tooling marks are permitted in this area. surface texture of which will be as achieved by usual manufacturing methods. w Figure 1 Table 1 050 MJ5xO,8-4H6H I 7 9,l 1 7
21、,8 5,5 8,3 060 MJGxl-4H5H I 8 10,6 8,5 6,5 9,8 070 MJ7xl-4H5H 9 12,l 9,5 7,5 11,3 1,2 4,67 080 MJ8xl-4H5H 10 13,6 10 8.5 12,8 2.8 5,92 100 I MJlOxI,25-4H5H I 12 I16,8 I12,6 I10,5 I15,8 1 120 I MJ12x1,25-4H5H 1 14 119.9 114.1 112.5 118.8 I 1.4 I I I I .I I .l. 140 I MJ14x1.5-4H5H I 17 I23 I16,7 I14,5
22、 121,9 I 1,7 I I I 1 I I I I I I 240 I MJ24x2-4H5H I 30 I 38 I 26,5 I 24,5 I 363 I 2,7 I10,I I 3,7 I J 16,49 i) In accordance with IS0 5855-2. In the self-locking zone, the tolerances apply before forming out-of-round. 2) Approximate values kg/l O00 pieces), calculated on the basis of 7,85 kg/dm3, g
23、iven for information purposes only COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesPage 6 prEN 4083 : 1995 Description block NUT , 4 Design at ion EXAMPLE : Identity block EN4083-060 Diameter code (see table 1) I NOTE : If necessary, th
24、e code I9005 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
