1、STD-AECMA PREN 2882-ENGL 3770 = LOL23LL 0032885 OUT M Edition approved for publication Comments should be sent within six months after the date of publication decision A. E .C. M .A. STAN DAR D NORME A.E.C.M.A. A.E.C.M.A. NORM C3 Chairman prEN 2882 Issue P 1 April 1990 DITE PAR LASSOCIATION EUROPEEN
2、NE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tel. (1) 47.36.98.76 ERRATUM DATED 31 January 1992 ENGLISH VERSION Aerospace series Nuts, hexagonal, self-locking, with counterbore and captive washer, in steel, cadmium plat
3、ed, Mos2 lubricated Classification : 1 1 O0 MPa (at ambient temperature) / 235 OC Srie arospatiale Luft- und Raumfahr crous hexagonaux, freinage interne, avec chambrage et rondelle captive, en acier, cadmis, lubrifis Mos2 Classification : I 1 O0 M Pa ( temprature ambiante) / 235 OC Sechskantmuttern,
4、 selbstsichernd, mit Aussenkung und Brdelscheibe, aus Stahl, verkadmet, Mos2 geschmiert Klasse : 1 1 O0 MPa (bei Raumtemperatur) / 235 OC Page 5 Replace page 5 by page placed on the reverse of this erratum which contains the following modification : For diameter codes 050 to 120, thickness of captiv
5、e washer, dimension M min. : - at the place of 0,4 - read 0,6 in conformity with IS0 8538. Note : prEN 2882, Issue P I. April 1990, has been distributed by circular AECMAiBNAE na 54396 dated 23th May 1990. 25th April 1990 A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 92138 Issy-les-Mouline
6、aux Cdex - FRANCE Mr. ARENA I I aecma 1991 STD-AECMA PREN 2882-ENGL L790 L0123LL 00L288b T4b Di arnete f 080 Break sharp edjies 0,l to O.L mm I I / prEN 2882 Page 5 x-x Figure 5) Table 6) Dimensions in millimetres E2) F . C H J 7) Thread I I 1 WlOx1,25 - 4H5H I13,2 I 12 I h13 I 17,2 1 12 110,s I 1 M
7、J12x1,25 - 4H5H I 15,s I 14 I I 21 I13, I 12,5 0,85 1,15 7,s 1) These values, in micrometres, applv before cadmjiim plating and MOS? lubrication. The values do not apply to threads and shearer edges the surface texture of which will he as achieved by usual manufacturing methods. 2) These dimensions
8、apply berore forming out-of-round, but finished nuts shall fit a standard socket wrench. Test conditions are quoted in the technical specification. 3) Rearing surface diameter of the washer. 4) Vrench pad engagement. 5) Details of form, not stated, are at the manufacturers option. 6) These dimension
9、s are in accordance with IC0 8538. Tolerances of form and position shall be in confonnitv with IS0 8788. DFmensionc and tolerances apDIv after cadmium plating but before MOS lubrication. 2 7) In accordance with IS0 5855-2. In self-locking zone the tolerances apply before forming out-of-round. AECMA
10、PREN2882 90 m 1012311 0004294 8 m Edition approved for publication 25th April 1990 A. E .C. M .A. STAN DARD NORME A.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. 88, Bd. Malesherbes Mr. ARENA 75008 PARIS - FRANCE prEN
11、 2882 Issue P 1 April 1990 DIT PAR LASSOCIAT!ON EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : Key words : ENGLISt VERSION Aerospace series Nuts, hexagonal, self-locking, with counterbore and captive washer, in steel, cadmium plated, M
12、os2 lubricated Classification : 1100 MPa (at ambient temperature)/235 OC Srie arospatiale Luft- und Raumfahrt crous hexagonaux, freinage interne. avec chambrage et rondelle captive, en acier, cadmis, lubrifis Mos2 Classification : 1 1 O0 MPa ( temprature ambiante)/235 OC Sechskantmuttern, selbstsich
13、ernd, mit Aussenkung und Brdelscheibe, aus Stahl, verkadmet, Mos2 geschmiert Klasse : 11 O0 MPa (bei Raumtem peratur) /235 OC This (Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel ArospatialJ. t is published on gre
14、en 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 changed to an extent that interchangeability is affec
15、ted. physically or functionally, without re-identification of the standard. After examination and signature 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 f
16、or Standardization) for final vote. aecma 1990 AECMA PRENZIW yo m 1,0123 ooowb L - prEN 2882 Page 3 1 Scope and field of application This standard specifies characteristics for hexagon nuts, with counterbore and captive washer, with a self-locking feature achieved by forming the upper portion out-of
17、-royrjd, in st 1, cadmium plated, MOS lubricated, classification 1100 MPa /235 OC 57 2 2 References IS0 5855-2, Aerospace - MJ Threads - Part 2 : Limit dimensions for bolts and nuts IS0 5858, IS0 8538, ISO 8788, EN 2000, EN 2133, EN 2424, EN 2491, EN 2543, EN 3042, EN 3329, EN 3330, EN 3704, Aerospa
18、ce - Self-locking nuts with maximum operating temperature - 425 OC - Procurement specification Aerospace - Self-locking hexagon nuts with counterbore and captive washer, classification 1100 MPa/235 OC 3) Aerospace - Fasteners - Tolerances of form and position for nuts Aerospace series - Quality assu
19、rance - EN aerospace products - Approval of the quality system of manufacturers 4) Cadmium plating of steels with maximum specified tensile strength equal to or less than 1450 MPa and copper and copper alloys - Aerospace series 4) Aerospace series - Identification marking of standard fasteners 4) Ae
20、rospace series - Application of molybdenum disulphide dry film lubricants to removable fasteners in titanium, titanium alloy, corrosion resisting steels and cadmium plated steels 3) Aerospace series - Steel FE-PL43S - Annealed - Sheet and strip 0,3 5 a - 2 mm for prevailing torque nuts 5) Aerospace
21、series - Quality assurance - EN aerospace products - Qualification procedure 4) Aerospace series - Steel FE-PL45 - Annealed - Sheet and strip 0,3 Aerospace series - Steel FE-PL45 - Annealed - Bar and wire De for prevailing torque nuts 5) a 5 2 mm for prevailing torque nuts 5) 40 mm Aerospace series
22、- .Substitute materials for all metal self-locking nuts and thin wall inserts 3). 1) 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. 2) Maximum temperature that the nut is
23、able to withstand, without permanent alteration of its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the cadmium plating. 3) In preparation at the date of publication of the present standard. 4) Published as AECMA standard at the dat
24、e of publication of the present standard. 5) Published as AECMA pre-standard at the date of publication of the present standard. - .AECMA PREN2B82 70 LOL23LL 0004277 3 prEN 2882 Page 4 3 Required characteristics 3.1 Configuration - Dimensions - Masses See figure and table. 3.2 Materials 1) Nut : EN
25、3329 or EN 3330. Washer : EN 2543 or EN 3329. 3.3 Surface treatment EN 2133, 5 um minimum on threads and all areas which can be contacted by a 20 mm diameter ball. On all other areas a continuous cadmium plating shall be present. Nut only : EN 2491, thickness not specified. 1) Substitute materials a
26、re given In EN 3704. prEN 2882 Page 6 4 Designation Example : Description block Id en t it y b lock Diameter code Note : If necessary, the originator code I9005 may be introduced between the description block and the identity block. 5 Marking EN 2424, style N. See figure. 6 Technical specification IS0 5858 except for : - approval of manufacturers : EN 2000 ; - qualification of nuts : EN 3042.
