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1、BRITISH STANDARD AEROSPACE SERIES BS EN 3899:2004 Inserts, thickwall, self-locking, MJ threads, in heat resisting steel FE-PM3801 (17-4PH) Technical specification The European Standard EN 3899:2004 has the status of a British Standard ICS 49.030.30 ? Licensed Copy: sheffieldun sheffieldun, na, Sat N
2、ov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 3899:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 16 December 2004 BSI 16 December 2004 ISBN 0 580 45111 9 National foreword This British Standard is the official English
3、 language version of EN 3899:2004. It supersedes BS EN 3899:2003, which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, which has the responsibility to: A list of organizations represented on this committee
4、 can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Searc
5、h” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obl
6、igations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary
7、 of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 23 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffie
8、ldun sheffieldun, na, Sat Nov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3899 November 2004 ICS 49.030.30Supersedes EN 3899:2003 English version Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting steel F
9、E-PM3801 (17-4PH) - Technical specification Srie arospatiale - Douilles filetes, paroi renforce, freinage interne, filetage MJ, en acier rsistant chaud FE-PM3801 (17-4PH) - Spcification technique Luft- und Raumfahrt - Gewindeeinstze, dickwandig, selbstsichernd, MJ-Gewinde, aus hochwarmfestem Stahl F
10、E-PM3801 (17-4PH) - Technische Lieferbedingungen This European Standard was approved by CEN on 11 September 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any a
11、lteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by tr
12、anslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece
13、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre:
14、rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3899:2004: E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 3899:2004 (E) 2 Cont
15、ents Page Foreword3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Quality assurance6 4.1 Qualification.6 4.2 Acceptance.7 4.2.1 Purpose.7 4.2.2 Conditions7 4.2.3 Responsibility 7 4.2.4 Inspection and test report.7 5 Requirements.7 Annex A (normative) Definition of test block.16 Annex
16、 B (normative) Assembly for rotational resistance test.18 Annex C (normative) Axial tensile strength test20 Annex D (normative) Assembly for reusability test.22 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 3899:2004 (E) 3 Foreword This
17、 document (EN 3899:2004) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Offic
18、ial Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at
19、the latest by May 2005. This document supersedes EN 3899:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France
20、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c)
21、BSI EN 3899:2004 (E) 4 1 Scope This standard specifies the characteristics, qualification and acceptance requirements for self-locking thickwall inserts with MJ threads, in FE-PM3801, for aerospace applications. It is applicable whenever referenced. 2 Normative references The following referenced do
22、cuments are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Samplin
23、g schemes indexed by acceptance quality limit (AQL) for lot-by-Iot inspection ISO 3452, Non-destructive testing Penetrant inspection General principles ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture ISO 58
24、55-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 7481, Aerospace Nuts, self-locking, with maximum operating temperature less than or equal to 425 C Test methods EN 2638, Aerospace series Aluminium alloy 2024-T3, extruded bar and section 1,2 (a or D) 150 mm with coarse perip
25、heral grain control 1) EN 3906, Aerospace series Martensitic corrosion resisting steel FE-PM3801 Air melted Solution treated Bar D 50 mm For the manufacture of fasteners 1 100 MPa Rm 1 300 MPa 1) EN 4014, Aerospace series Inserts, thickwall, self-locking Design standard EN 4015, Aerospace series Ins
26、erts, thickwall, self-locking Installation and removal procedure EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts 1) ASTM E112-96, Standard Test Methods for Determining Average Grain Size 2) 3 Terms and definitions For the purposes of this sta
27、ndard, the following terms and definitions apply. 3.1 batch quantity of finished parts, of the same type and same diameter, produced from the same material obtained from the same melt, manufactured in the course of the same production cycle, following the same manufacturing route and having undergon
28、e all the relevant heat treatments and surface treatments 1) Published as AECMA Prestandard at the date of publication of this standard 2) Published by: American Society for Testing and Materials (ASTM), 1916, Race street, Philadelphia, PA 19103, USA Licensed Copy: sheffieldun sheffieldun, na, Sat N
29、ov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 3899:2004 (E) 5 3.2 Inspection lot quantity of parts from a single production batch with the same part number which completely defines the part 3.3 Surface discontinuities 3.3.1 crack rupture in the material which may extend in any directi
30、on and which may be intercrystalline or transcrystalline in character 3.3.2 seam open surface defect 3.3.3 lap surface defect caused by folding over metal fins or sharp corners and then compressing them into the surface 3.3.4 inclusions non-metallic particles originating from the material manufactur
31、ing process. These particles may be isolated or arranged in strings. 3.4 test temperature ambient temperature, unless otherwise specified 3.5 simple random sampling the taking of n items from a population of N items in such a way that all possible combinations of n items have the same probability of
32、 being chosen 3.6 critical defect defect that, according to judgement and experience, is likely to result in hazardous or unsafe conditions for individuals using, maintaining, or depending upon the considered product, or that is likely to prevent performance of the function of a major end item 3.7 m
33、ajor defect defect other than critical, that is likely to result in a failure or to reduce materially the usability of the considered product for its intended purpose 3.8 minor defect defect that is not likely to reduce materially the usability of the considered product for its intended purpose, or
34、that is a departure from established specification having little bearing on the effective use or operation of this product 3.9 sampling plan plan according to which one or more samples are taken in order to obtain information and possibly to reach a decision 3.10 limiting quality (LQ10) in a samplin
35、g plan, the quality limit which corresponds to a specified 10 % probability of acceptance Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 3899:2004 (E) 6 3.11 acceptance quality limit (AQL) a quality limit which in a sampling plan corresp
36、onds to a specified but relatively high probability of acceptance It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection can be considered satisfactory as a process average. 3.12 finished thickwall insert thickwall insert r
37、eady for use, inclusive of any possible treatments and/or surface coatings, as specified in the product standard or definition document 3.13 definition document document specifying all the requirements for finished thick wall inserts 3.14 self-locking torque torque to be applied to the associated bo
38、lt to maintain its movement of rotation in relation to the thickwall insert assembly which is under no axial load and the insert locking zone being completely engaged with the bolt (minimum protrusion of two pitches, including the end chamfer) 3.15 seating torque tightening torque to be applied to t
39、he thickwall insert and bolt assembly to introduce or to increase the axial load in the assembly 3.16 unseating torque untightening torque to be applied to the thickwall insert and bolt assembly to reduce or remove the axial load in the assembly 3.17 breakaway torque torque required to start unscrew
40、ing the associated bolt with respect to the installed thickwall insert, with the insert locking zone still fully engaged on the bolt, but after the axial load in the assembly has been removed by unscrewing half a turn followed by a halt in rotational movement 4 Quality assurance 4.1 Qualification EN
41、 9133 Qualification inspections and tests (requirements, methods, numbers of thickwall inserts) are specified in Table 1. They shall be carried out on: each type and diameter of thickwall inserts; 44 thick wall inserts selected from a single batch by simple random sampling. The test programme may po
42、ssibly be reduced, or the qualification be granted without inspection or testing. Any such decision shall be based on the results obtained on similar types and diameters of thickwall inserts provided that the design and manufacturing conditions are identical. Table 2 indicates the allocation of thic
43、kwall insert samples for the inspections and tests. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 03:21:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 3899:2004 (E) 7 4.2 Acceptance 4.2.1 Purpose The purpose of acceptance inspections and tests is to check, as simply as possible, by a meth
44、od representative of actual use conditions, with the uncertainty inherent to statistical sampling, that the thickwall inserts constituting the batch satisfy the requirements of this standard. 4.2.2 Conditions Acceptance inspections and tests (requirements, methods, numbers of thick wall inserts) are
45、 specified in Table 1. They shall be carried out on each batch. Thickwall inserts from the batch to be tested shall be selected by simple random sampling. Each thickwall insert may be submitted to several inspections or tests. If a more stringent inspection is deemed necessary, all or part of the qu
46、alification inspections and tests may be performed during the acceptance inspections and tests. In this case, the number of thickwall inserts submitted to these inspections and tests is the same as that submitted for qualification inspection and tests. 4.2.3 Responsibility Acceptance inspections and
47、 tests shall be carried out by the manufacturer, or under his responsibility. 4.2.4 Inspection and test report A test report showing actual numerical values shall be provided if specified in the purchase order. 5 Requirements See Table 1. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 03:21:
48、29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 3899:2004 (E) 8 Table 1 Technical requirements and test methods Clause Characteristic Requirement Inspection and test method Q/A a Sample size Q 5.1 Material In accordance with the product standard or definition document Chemical analysis or certifica
49、te of conformity issued by the manufacturer of the semi-finished product A Q 44 5.2 Dimensions, tolerances and tolerances of form and position In accordance with the product standard or definition document Standard gauging A Tables 3 and 4 5.3 Manufacturing Q 5.3.1 Process Inserts may be manufactured by machining or forming. Manufacturing method shall be indicated. Q The heat treatment medium or atmosphere shall