1、CEN PREN*41Lb 93 3404589 0053996 LOT Edition approved for publication 1993-1 1-30 AECMA STANDARD NORME AECMA AECMA NORM C8 Chairman Comments should be sent within six months after the date of publication to Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE AECMA
2、Mr. WILLIAMS prEN 41 16 Edition P 1 November 1993 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (i) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Nuts, hexagonal, self-l
3、ocking, in heat resisting steel FE-PA92HT (A286), silver plated on thread Classification : 1 100 MPa (at ambient temperature) / 425 OC Srie arospatiale crous hexagonaux, freinage interne, en acier rsistant chaud FE-PA92HT (A286). argents sur filetage Classification : 1 100 MPa ( temprature ambiante)
4、 1425 OC Luft- und Raumfahrt Sechskantmuttern, selbstsichernd, aus hochwarmfestem Stahl FE-PA92HT (A2861, Gewinde versilbert Klasse : 1 100 MPa (bei Raumtemperatur) I425 OC This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeur
5、s 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 the publication of this prestandard, the technical content shall not
6、 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 (NPS) and formal agreement of the Official Services of the Member countries it will be submitted
7、as a draft European Standard to CEN (European Committee for Standardization) for formal vote. CEN PREN*4LLb 93 m 3404589 0053997 04b m Page 3 prEN 41 16 : 1993 1 Scope This standard specifies the characteristics of self-locking hexagonal nuts in FE-PA92HT, silver plated on thread, for aerospace appl
8、ications. Classification : 1 100 MPa l) / 425 OC 2, 2 Normative references IS0 5855-2 Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts IS0 7995 Aerospace - Nuts, hexagonal, self-locking, with MJ threads, coated or uncoated, classification 1 100 MPa / 235 OC, 1 100 MPa / 315 OC o
9、r 1 100 MPa / 425 OC - Dimensions EN 2399 Heat resisting steel FE-PA92-HT - R, 2 900 MPa - Bars for forged bolts - D 25 mm - Aerospace series 3, O EN 2424 Aerospace series - Identification marking of standard fasteners 3, EN 2786 Aerospace series - Electrolytic silver plating of fasteners 4, EN 3152
10、 Aerospace series - Propulsion standard parts - Nuts, self-locking, in heat resisting steel FE-PA92HT (A2861 - Classification : 1 100 MPa / 425 OC - Technical specification 4, EN 3638 Aerospace series - Heat resisting steel FE-PA92HT - Solution treated - Sheet and strip - aI3mm5) EN 3639 Aerospace s
11、eries - Heat resisting steel FE-PA92HT, cold worked and softened - Bars and wires for continuous cold forging or extrusion of fasteners - 3 mm I D I30 mm - R, 2 900 MPa 51 1) The strength class of the bolt concerned which can withstand the load at ambient temperature when tested at 100 % load withou
12、t cracking or breaking of the nut. 2) Maximum test temperature of the parts 3) Published as AECMA Standard at the date of publication of this standard 4) Published as AECMA Prestandard at the date of publication of this standard 5) In preparation at the date of publication of this standard Previous
13、page is blank CEN PREN*4LLb 93 m 3404589 0053998 T82 Page 4 prEN 4116 : 1993 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances - Masses See figure 1 and table 1. Dimensions and tolerances are in millimetres. They apply after silver plating for thread surface. 3.2 Materials EN 23
14、99, EN 3638 or EN 3639 3.3 Surface treatment EN 2786 on thread and chamfers Thickness : - Thread 2 MJ6 : 5 I.rm min. on thread flanks ; - Thread I MJ5 : shall show complete coverage, without thickness requirement ; - Chamfers : shall show complete coverage, without thickness requirement. CEN PRENt4L
15、Lb 93 3404589 O053999 919 080 100 120 Page 5 prEN 41 16 : 1993 MJ8x1-4H5H 10.9 10 13.6 MJ101,25-4H5H 13,2 12 h13 16.8 MJ121,25-4H5H 15,5 14 19.9 - Thread surface will be as achieved by normal methods of manufacture. (applicable before silver plating). Chamfer, radius or broken edge this area ocking
16、slbie) Remove sharp edges 0,l to 0,4 Details of form not stated are left to the monufaciurers discretion. 1) All forms of entry (radius or chamfer) are permissible within these llmltlng dimensions. Figure 1 Table 1 *) Desi nation min. nom. TOI. max. 030 I MJ3x0,5-4H6H I 4.2 I 4 040 1 MJ4x0,7-4H6H I
17、5.3 I 5 050 I MJ5x0,8-4H6H I 6,5 I 6 h12 060 I MJ6x1-4H5H I 7.6 I 7 , ,- , - _ - 070 I MJ7x1-4H5H I 8.7 I 8 Mass Q w Y 24 kgl1000 *) The dimensions are in accordance with IS0 7995. CEN PREN*4LLb 93 3404589 O054000 239 Page 6 prEN 41 16 : 1993 4 Designation EXAMPLE : Description block I Identity bloc
18、k NUT I EN4116-050 TT- Number of this standard Thread code (see table 1) NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style see table 2 and as indicated on figure 1. Table 2 I 050to 120 I C I 6 Technical specification EN 3152
