SIST EN 3043:2026

SLOVENSKI STANDARD
01-februar-2026
Aeronavtika - Vezni elementi z zunanjim navojem iz toplotnoodpornega jekla FE
PA92HT (A286) - Klasifikacija: 900 MPa/650 °C, metoda izdelave po izbiri -
Tehnična specifikacija
Aerospace series - Fasteners, externally threaded, in heat resisting steel FE PA92HT
(A286) - Classification: 900 MPa/650 °C, manufacturing method optional - Technical
specification
Luft- und Raumfahrt - Verbindungselemente mit Außengewinde aus hochwarmfestem
Stahl FE-PA92HT (A286) - Klasse: 900 MPa/650 °C, Herstellverfahren nach Wahl -
Technische Lieferbedingungen
Série aérospatiale - Élements de fixation, filetés, en acier résistant à chaud FE PA92HT
(A286) - Classification: 900 MPa/650 °C, mode de fabrication non imposé - Spécification
technique
Ta slovenski standard je istoveten z: EN 3043:2025
ICS:
49.030.01 Vezni elementi na splošno Fasteners in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3043
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2025
EUROPÄISCHE NORM
ICS 49.030.30 Supersedes EN 3043:2008
English Version
Aerospace series - Fasteners, externally threaded, in heat
resisting steel FE-PA92HT (A286) - Classification: 900
MPa/650 °C, manufacturing method optional - Technical
specification
Série aérospatiale - Éléments de fixation à filetage Luft- und Raumfahrt - Verbindungselemente mit
extérieur, en acier résistant à chaud FE-PA92HT Außengewinde aus hochwarmfestem Stahl FE-PA92HT
(A286) - Classification : 900 MPa/650 °C, mode de (A286) - Klasse: 900 MPa/650 °C, Herstellverfahren
fabrication non imposé - Spécification technique nach Wahl - Technische Lieferbedingungen
This European Standard was approved by CEN on 25 August 2025.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3043:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Certification and quality assurance . 6
4.1 Acceptance. 6
4.1.1 Purpose . 6
4.1.2 Conditions . 7
4.2 Quality system certification . 7
4.2.1 Purpose . 7
4.2.2 Requirements and procedure, quality management system . 7
4.3 Responsibility for inspection and tests. 7
4.4 Inspection and test report . 7
5 Technical requirements and test methods . 7
Bibliography . 24

European foreword
This document (EN 3043:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, 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 June 2026, and conflicting national standards shall be
withdrawn at the latest by June 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 3043:2008.
This document includes the following significant technical changes with respect to EN 3043:2008:
— Table 1 “Technical requirements and test methods” has been updated.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies the technical and quality assurance requirements for externally threaded
fasteners in material FE-PA92HT (A286) of tensile strength class 900 MPa at room temperature,
maximum test temperature of material 650 °C, either manufactured by machining from bar or forging.
Primarily for aerospace applications, it is applicable to such externally threaded fasteners when
referenced on the product standard or drawing.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 2398, Aerospace series — Heat resisting steel FE-PA2601 (X6NiCrTiMoV26-15) — R ≥ 900 MPa —
m
Bars for machined bolts — D ≤ 25 mm
EN 2399, Aerospace series — Heat resisting steel FE-PA2601 (X4NiCrTiMoV26-15) — R ≥ 900 MPa —
m
Bars for forged bolts — D ≤ 25 mm
EN 3639, Aerospace series — Heat resisting alloy X6NiCrTiMoV26-15 (1.4980) — Softened and cold
worked — Wires for forged fasteners — D ≤ 15 mm — 900 MPa ≤ Rm ≤ 1 100 MPa
ISO 3452-1, Non-destructive testing — Penetrant testing — Part 1: General principles
ISO 7961, Aerospace — Bolts — Test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
production batch
quantity of finished parts fabricated by the same process from a single material cast (single heat of alloy),
having the same basic part number and diameter, heat treated together to the same specified condition
and produced as one continuous run
3.2
inspection lot
consignment of parts from a single production batch of the same part number which completely defines
the part
3.3 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
longitudinal surface defect in the form of an unwelded open fold in the material
3.3.3
lap
surface defect caused by folding over metal fins or sharp corners and then rolling or forging them into
the surface
3.3.4
inclusion
non-metallic particles originating from the material making process, which may exist as discrete particles
or strings of particles extending longitudinally
3.4
test temperature
ambient temperature, unless otherwise specified
3.5
simple random sampling
sampling where a sample of n sampling units is taken from a population in such a way that all the possible
combinations of n sampling units have the same probability of being taken
[SOURCE: ISO 3534-2:2006, 1.3.4, modified – The definition “sampling where a sample of n sampling
units is taken from a population in such a way that all the possible combinations of n sampling units have
the same probability of being taken” has been modified to the current definition; the Note has been
deleted.]
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
[SOURCE: ISO 9152:1998, 3.12, modified – “considered product (bolt)” has been replaced by “considered
product”.]
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
[SOURCE: ISO 9152:1998, 3.13, modified – “considered product (bolt)” has been replaced by “considered
product”.]
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
[SOURCE: ISO 9152:1998, 3.13, modified – “considered product (bolt)” has been replaced by “considered
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
[SOURCE: ISO 9152:1998, 3.10, modified – “and to reach a decision, if possible” has been replaced by “and
possibly to reach a decision”.]
3.10
limiting quality
LQ
quality Ievel which corresponds to a specified and relatively low probability of
acceptance
Note 1 to entry: When expressed as a per cent defective, it may be referred to as a lot tolerance per cent defective.
[SOURCE: ISO 9152:1998, 3.15, modified – “LQ” has been replaced by “LQ ”, Note 1 and Note 2 have been
replaced by a new Note 1 to entry.]
3.11
acceptable quality level
AQL
quality level which in a sampling plan corresponds to a specified but relatively high probability of
acceptance
Note 1 to entry: 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.
[SOURCE: ISO 9152:1998, 3.16 – modified – Note 1 has been used as definition; Note 1 has been replaced
by a new Note 1 to entry.]
3.12
finished part
part ready for use, inclusive of any possible treatments and/or surface coatings, as specified in the
dimensional standard or drawing
4 Certification and quality assurance
4.1 Acceptance
4.1.1 Purpose
The purpose of acceptance 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 bolts constituting the batch
satisfy the requirements of this document.
4.1.2 Conditions
Acceptance tests are summarized in Table 2. They shall be performed on each batch. Table 1 specifies the
test method and sampling plan to be used for each test. Bolts from the batch to be tested shall be selected
by simple random sampling.
Each bolt may be submitted to several tests.
The bolts to be subjected to destructive tests may be those on which non-destructive tests have been
performed.
4.2 Quality system certification
4.2.1 Purpose
The purpose of quality system certification is to ensure that demonstration of the acceptability of the
quality system and the ability for continuing production of parts according to this document, to the
required level of quality.
4.2.2 Requirements and procedure, quality management system
The manufacturer’s operations shall be an approved production organisation for aerospace products and
shall demonstrate that it has implemented and is able to maintain a quality management system (e.g.
according to EN 9100 or an equivalent aerospace accepted and established quality management system).
The qualification procedure for aerospace standard products (e.g. according to EN 9133 or an equivalent
aerospace accepted and established qualification procedure) shall be used and documented according to
the specified tests if not otherwise agreed between customer and supplier.
4.3 Responsibility for inspection and tests
The performance of all inspection and test requirements as specified herein shall be carried out before
shipment of the specified goods. The facilities for the implementation of inspection and test requirements
shall be either the place of manufacture or facilities approved in accordance with 4.2.
4.4 Inspection and test report
A test report showing actual numerical values shall be provided, unless otherwise agreed and
documented, at the time of purchase.
5 Technical requirements and test methods
Technical requirements and test methods shall be according to Table 1.
Table 1 — Technical requirements and test methods
Inspection and Sample
a
Item Characteristic Technical requirement A
test method size
5.1 Material Material FE-PA92HT according to As stated in the — —
specification EN 2398, EN 2399 or material
EN 3639 supplied by an approved specification.
source: shall be used for the
manufacture of parts to this
document.
5.2 Dimensions, — — A
Table 4
tolerances of
and
form and
Table 5
position, threads
and quality
5.2.1 Dimensions The dimensions of the finished All dimensions — —
parts shall conform to the product shall be
standard or definition document. controlled by an
approved system
of gauging.
5.2.2 Tolerances of Tolerances of form and position Tolerances of — —
form and shall conform to the product form and
position shall be
position standard or definition document.
controlled by an
approved system
of gauging.
5.2.3 Threads Threads shall conform to the Threads shall be — —
product standard or definition gauged by an
approved system
document.
of gauging.
5.3 Manufacturing Parts may be manufactured by — — —
machining from material EN 2398
or by forging from material
EN 2399 or EN 3639.
5.3.1 Machined from Parts manufactured from material — — —
bar parts in the softened, cold worked and
solution treated condition shall be
semi-finish machined and then
precipitation heat treated per
5.3.3.2 prior to final machining,
thread rolling (and fillet rolling if
specified on the product standard).
Parts manufactured from material
in the softened, cold worked,
solution treated and precipitation
treated condition shall be finished,
machined, thread rolled, etc.
without further heat treatment.
Inspection and Sample
a
Item Characteristic Technical requirement A
test method size
Forged parts may be formed by
5.3.2 Forged parts — — —
hot or cold forging. If hot forged
the forging temperature shall not
exceed 1 150 °C and shall be air
cooled. The heating equipment for
forging shall be of a type whic
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