SIST EN 3899:2005
(Main)Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting steel FE-PM3801 (17-4PH) - Technical specification
Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting steel FE-PM3801 (17-4PH) - Technical specification
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.
Luft- und Raumfahrt - Gewindeeinsätze, dickwandig, selbstsichernd, MJ-Gewinde, aus hochwarmfestem Stahl FE-PM3801 (17-4PH) - Technische Lieferbedingungen
Diese Norm legt die Merkmale sowie die Qualifikations- und Annahmebedingungen für selbstsichernde, dickwandige Gewindeeinsätze mit MJ-Gewinde aus FE-PM3801 für Anwendungen in der Luft- und Raum¬fahrt fest.
Sie ist immer dann anzuwenden, wenn auf sie verwiesen wird.
Série aérospatiale - Douilles filetées, a paroi renforcée, a freinage interne, a filetage MJ, en acier résistant a chaud FE-PM3801 (17-4PH) - Spécification technique
Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting steel FE-PM3801 (17-4PH) - Technical specification
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 3899:2005
01-junij-2005
1DGRPHãþD
SIST EN 3899:2004
Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting
steel FE-PM3801 (17-4PH) - Technical specification
Aerospace series - Inserts, thickwall, self-locking, MJ threads, in heat resisting steel FE-
PM3801 (17-4PH) - Technical specification
Luft- und Raumfahrt - Gewindeeinsätze, dickwandig, selbstsichernd, MJ-Gewinde, aus
hochwarmfestem Stahl FE-PM3801 (17-4PH) - Technische Lieferbedingungen
Série aérospatiale - Douilles filetées, a paroi renforcée, a freinage interne, a filetage MJ,
en acier résistant a chaud FE-PM3801 (17-4PH) - Spécification technique
Ta slovenski standard je istoveten z: EN 3899:2004
ICS:
49.030.30 Matice Nuts
SIST EN 3899:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 3899:2005
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SIST EN 3899:2005
EUROPEAN STANDARD
EN 3899
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.030.30 Supersedes EN 3899:2003
English version
Aerospace series - Inserts, thickwall, self-locking, MJ threads, in
heat resisting steel FE-PM3801 (17-4PH) - Technical
specification
Série aérospatiale - Douilles filetées, à paroi renforcée, à Luft- und Raumfahrt - Gewindeeinsätze, dickwandig,
freinage interne, à filetage MJ, en acier résistant à chaud selbstsichernd, MJ-Gewinde, aus hochwarmfestem Stahl
FE-PM3801 (17-4PH) - Spécification technique FE-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 alteration. 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 translation
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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3899:2004: E
worldwide for CEN national Members.
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SIST EN 3899:2005
EN 3899:2004 (E)
Contents Page
Foreword.3
1 Scope.4
2 Normative references.4
3 Terms and definitions .4
4 Quality assurance.6
4.1 Qualification.6
4.2 Acceptance.7
4.2.1 Purpose.7
4.2.2 Conditions.7
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 B (normative) Assembly for rotational resistance test .18
Annex C (normative) Axial tensile strength test.20
Annex D (normative) Assembly for reusability test.22
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SIST EN 3899:2005
EN 3899:2004 (E)
Foreword
This 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 Official 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
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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
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SIST EN 3899:2005
EN 3899:2004 (E)
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 documents 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: Sampling 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 5855-2, 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)
1,2 ≤ (a or D) ≤ 150 mm with coarse peripheral grain control
EN 3906, Aerospace series – Martensitic corrosion resisting steel FE-PM3801 – Air melted –
Solution treated – Bar – D ≤ 50 mm – For the manufacture of fasteners –
1)
1 100 MPa ≤ R ≤ 1 300 MPa
m
EN 4014, Aerospace series – Inserts, thickwall, self-locking – Design standard
EN 4015, Aerospace series – Inserts, thickwall, self-locking – Installation and removal procedure
EN 9133, Aerospace series – Quality management systems – Qualification procedure for aerospace
1)
standard parts
2)
ASTM E112-96, Standard Test Methods for Determining Average Grain Size
3 Terms and definitions
For the purposes of this standard, 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 undergone 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
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SIST EN 3899:2005
EN 3899:2004 (E)
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 direction 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 manufacturing 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 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
major 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
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 (LQ )
10
in a sampling plan, the quality limit which corresponds to a specified 10 % probability of acceptance
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SIST EN 3899:2005
EN 3899:2004 (E)
3.11
acceptance quality limit (AQL)
a quality limit which in a sampling plan corresponds 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 ready 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 bolt 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 the 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 unscrewing 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 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 possibly 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 thickwall insert samples for the inspections and tests.
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SIST EN 3899:2005
EN 3899:2004 (E)
4.2 Acceptance
4.2.1 Purpose
The purpose of acceptance inspections and tests is to check, as simply as possible, by a method
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 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 qualification 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 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.
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SIST EN 3899:2005
EN 3899:2004 (E)
Table 1 — Technical requirements and test methods
a
Clause Characteristic Requirement Inspection and test method Q/A Sample
size
5.1 Material In accordance with the Chemical analysis or Q
product standard or definition certificate of conformity
A
document issued by the manufacturer
of the semi-finished product
5.2 Dimensions, In accordance with the Standard gauging Q 44
tolerances and product standard or definition
A Tables
tolerances of document
3 and 4
form and
position
5.3 Manufacturing
5.3.1 Process Inserts may be manufactured Manufacturing method shall Q
by machining or forming. be indicated.
5.3.2 Heat treatment The heat treatment medium Calibration of the heat Q
or atmosphere shall not treatment equipment shall be
cause any surface confirmed.
contamination.
Any scale which will not be Visual examination
removed by subsequent
machining shall be removed
by abrasive blasting with an
appropriate equipment.
The blank shall be solution Examination of the heat
tr
...
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