1、- STD.ACMA PREN 3831-ENGL 2000 L0123LL 0037827 837 D AECMA STANDARD NORME AECMA AECMA NORM prEN 3831 Edition P 2 February 2000 6-1 200 BRUXELLES O aecma 20C PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 6-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2
2、 775 81 1 1 Edition approved for publication ICs: 49.030.50 C8 Chairman Comments should be sent within six months after the date of Dublication to Supersedes issue P 1 October 1993 Descriptors: aircraft industry, joining adaptor, steeli heat resistant steel, characteristic, surface treatment, dimens
3、ion, dimensional tolerance, designation, marking ENGLISH VERSION Aerospace series Inserts, thickwall, self-locking, in heat resisting steel FE-PM3801 (17-4PH), Mos2 coated Srie arospatiale Douilles filetes, paroi renforce, freinage interne, en acier rsistant a chaud revtues MOS, FE-PM3801 (174PH), L
4、uft- und Raumfahrt Gewindeeinstze, dickwandig, selbstsichernd, aus hochwarmfestem Stahl MOS, beschichtet FE-PM3801 (17-4PH), This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for
5、the needs of AECMA- Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected,
6、 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 for S
7、tandardization) for formal vote. I 2000-02-29 AECMA Gulledelle 94 Mr Feltham I ! STD.AECMA PREN 3831-ENGL 2nGO I10123L1, OCIL7830 557 I Page 3 prEN 3831: 2000 O Introduction For design and installation procedures see EN 4014 and EN 4015. 1 Scope This standard specifies the characteristics of self-lo
8、cking, thickwall inserts, in FE-PM3801, Mos2 coated, for aerospace applications. Maximum test temperature: 350 “C 2 Normative references IS0 5855-2 Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts EN 2424 Aerospace series - Marking of aerospace products EN 2491 Aerospace series -
9、 Molybdenum disulphide dry lubricants - Coating methods EN 3899 Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting steel FE-PM3801 (1 7-4PH) - Technical specification 1) EN 3906 Aerospace series - Martensitic corrosion resisting steel FE-PM3801 - Air melted - Solution
10、 treated - Bar - D I 50 mm - For the manufacture of fasteners - I 100 MPa I R, 2 1 300 MPa 1) EN 4014 Aerospace series - inserts, thickwall, self-locking - Design standard 1) EN 4015 Aerospace series - Inserts, thickwall, self-locking - Installation and removal procedure 1) TR 3198 Aerospace series
11、- Manufacturers identification monograms and marks for EN aerospace products 2) 3 Required characteristics 3.1 See figure 1 and tables I and 2. Dimensions and tolerances are in millimetres. They apply before Mos2 coating. Configuration - Dimensions - Tolerances - Masses 3.2 Material EN 3906 3.3 Surf
12、ace treatment EN 2491 I) Published as AECMA Prestandard at the date of publication of this standard 2) Published as AECMA Technical Report at the date of publication of this standard STD-ACCMA PREN 3831-ENGL 2UOll W LUL%3LL OOL783L g75 Page 4 prEN 3831: 2000 4 Insert definition Ra32J Ray Values appl
13、y before Mos2 coating. Remove sharp edges 0,l to 0,4. 1 -4 Key I 2 3 Pitch diameter Details of form not stated are left to the manufacturers discretion. Knurl across thread to produce J number of serration Form out-of-round in this area to achieve the self-locking requirement Figure 1 4.1 Normal siz
14、e insert See table 1. Table i 060-0 MJGxl-4H5H M J91-4h6 h 7 070-0 MJ7x1-4H5H MJlOx1-4hGh a 080-0 I MJ8x1-4H5H I MJllxl4hGh 1 9 100-0 I MJlOx1.25-4H5H 1 MJS13xl-4hGh I 11 a In accordance with IS0 5855-2 After deformation I D f 0,3 10,9 12,9 16,2 - - - JL min. 24 1 5,l 27 1 5,8 -+y 37 11,5 Mb max. 63
15、 - 75 Mass kg/l O00 parts 2. 2 2.6 4,5 Page 5 prEN 3831 : 2000 4.2 Repair size insert See table 2. Table 2 After deformation 5 Designation EXAMPLE: Description block identity block INSERT THICKWALL EN3831-050-1 Number of this standard Thread code (see tables I and 2) NOTE description block and the identity block. If necessary, the code 19005 (Cage code allocated to AECMA) shall be placed between the 6 Marking EN 2424, style G Manufacturers identification marks in accordance with the list for special identification marks in TR 3198 7 Technical specification EN 3899
