EN 16602-70-46:2014

Space product assurance - Requirements for manufacturing and procurement of threaded fasteners

This Standard defines the requirements for manufacturing, provision, inspection and quality control of high­quality threaded fastening
devices (bolts, nuts, studs and screws) hereafter referred to as threaded fasteners or fasteners, used in space hardware.
This Standard does not include a complete review of the factors relevant to the fabrication of high quality threaded fasteners. It provides
the definition of the technical requirements and quality control procedures to be applied in the fabrication and supply of threaded
fasteners for spacecraft applications.
Fasteners for spacecraft applications are those aerospace standard fasteners (i.e. in accordance with LN, DIN or other national or international aerospace standards), or those fasteners meeting or exceeding the requirements in ISO 4759 1 for “Product grade A”, which also fulfil the requirements for space applications as specified in the present document.

Raumfahrtproduktsicherung - Anforderungen für die Herstellung und Beschaffung von eingezogenen Klemmen/Befestigern

Assurance produit des projets spatiaux - Exigences pour la fabrication et l'approvisionnement de fixations filetées

La présente norme définit les exigences relatives à la fabrication, l'approvisionnement, l'inspection et le contrôle qualité de dispositifs d'assemblage filetés de haute qualité (boulons, écrous, goujons et vis) ci-après dénommés fixations filetées ou éléments de fixation, utilisés dans le matériel spatial.
La présente norme ne comprend pas une présentation exhaustive des facteurs importants pour la fabrication d'éléments de fixation filetés de haute qualité. Elle donne la définition des exigences techniques et des procédures de contrôle qualité à appliquer dans la fabrication et la fourniture de fixations filetées pour applications spatiales.
Les éléments de fixation pour applications spatiales sont les éléments de fixation habituelles (c'est-à-dire conformes aux normes LN, DIN ou aux autres normes aérospatiales nationales ou internationales), ou les éléments de fixation au minimum conformes aux exigences de la norme ISO 4759 1 pour la « qualité de produit A », répondant également aux exigences pour applications spatiales telles que spécifiées au présent document.

Zagotavljanje varnih proizvodov v vesoljski tehniki - Zahteve za izdelavo in preskrbo vijačnih zvez

Ta standard določa zahteve za izdelavo, preskrbo, inšpekcijske preglede in nadzor kakovosti visoko kakovostnih vijačnih veznih elementov (vijakov in matic), v nadaljnjem besedilu vijačnih zvez ali zvez, ki se uporabljajo za vesoljsko strojno opremo. Ta standard ne zajema popolnega pregleda dejavnikov, pomembnih za izdelavo visoko kakovostnih vijačnih zvez. Zagotavlja definicijo tehničnih zahtev in postopkov za nadzor kakovosti, ki se uporabljajo pri izdelovanju in preskrbi vijačnih zvez za vesoljska plovila. Zveze za vesoljska plovila so tiste aeronavtične standardne zveze (tj. v skladu z LN, DIN ali drugimi nacionalnimi ali mednarodnimi aeronavtičnimi standardi) ali tiste zveze, ki izpolnjujejo ali presegajo zahteve iz standarda ISO 4759-1 za »razred izdelave A«, ki izpolnjujejo tudi zahteve za vesoljske uporabe, kot je določeno v tem dokumentu.

General Information

• Status: Published
• Publication Date: 28-Oct-2014
• Withdrawal Date: 29-Apr-2015
• ICS: 49.030.01 - Fasteners in general
• ICS: 49.140 - Space systems and operations
• Technical Committee: CEN/CLC/TC 5 - Space
• Drafting Committee: CEN/CLC/TC 5 - Space
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 03-Jun-2020
• Completion Date: 03-Jun-2020
• Mandate: M/496 - Mandate addressed to CEN, CENELEC and ETSI to develop standardisation regarding space industry (Phase 3 of the process)
• Ref Project: SIST EN 16602-70-46:2015 - Space product assurance - Requirements for manufacturing and procurement of threaded fasteners

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2015
=DJRWDYOMDQMHYDUQLKSURL]YRGRYYYHVROMVNLWHKQLNL=DKWHYH]DL]GHODYRLQ
SUHVNUERYLMDþQLK]YH]
Space product assurance - Requirements for manufacturing and procurement of
threaded fasteners
Raumfahrtproduktsicherung - Anforderungen für die Herstellung und Beschaffung von
eingezogenen Klemmen/Befestigern
Assurance produit des projets spatiaux - Exigences pour la fabrication et
l'approvisionnement de fixations filetées
Ta slovenski standard je istoveten z: EN 16602-70-46:2014
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.

EUROPEAN STANDARD
EN 16602-70-46
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 49.030.01; 49.140
English version
Space product assurance - Requirements for manufacturing and
procurement of threaded fasteners
Assurance produit des projets spatiaux - Exigences pour la Raumfahrtproduktsicherung - Anforderungen für die
fabrication et l'approvisionnement de fixations filetées Herstellung und Beschaffung von eingezogenen
Klemmen/Befestigern
This European Standard was approved by CEN on 18 October 2014.

CEN and CENELEC 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 and CENELEC
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 and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
has the same status as the official versions.

CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

CEN-CENELEC Management Centre:
Avenue Marnix 17, B-1000 Brussels
© 2014 CEN/CENELEC All rights of exploitation in any form and by any means reserved Ref. No. EN 16602-70-46:2014 E
worldwide for CEN national Members and for CENELEC
Members.
Table of contents
Foreword . 4
1 Scope . 5
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 8
3.1 Terms defined in other standards . 8
3.2 Terms specific to the present standard . 8
3.3 Abbreviated terms. 9
4 Requirements . 10
4.1 Fabrication . 10
4.1.1 General . 10
4.1.2 Raw material . 10
4.1.3 Head forming . 10
4.1.4 Heat treatment . 11
4.1.5 Head-to-shank fillet rolling . 11
4.1.6 Threads . 11
4.1.7 Identification marking . 12
4.1.8 Surface treatment . 12
4.1.9 Workmanship, handling and packaging . 12
4.2 Dimensional and metallurgical requirements. 13
4.2.1 General . 13
4.2.2 Nominal dimensions . 13
4.2.3 Head-to-shank fillet . 13
4.2.4 Non-destructive inspections . 14
4.2.5 Metallurgical examination . 15
4.2.6 Measurement of hydrogen content . 16
4.2.7 Outgassing and offgassing . 16
4.3 Mechanical testing . 17
4.3.1 General . 17
4.3.2 Hardness test . 17
4.3.3 Tensile test . 18
4.3.4 Shear test . 19
4.3.5 Fatigue test . 20
4.3.6 Creep test . 20
4.3.7 Corrosion test . 22
4.3.8 Stress-corrosion test . 22
4.4 Quality assurance . 23
4.4.1 General . 23
4.4.2 Quality requirements . 23
Annex A (normative) Customer specification document for threaded
fasteners – DRD . 26
Annex B (normative) Product conformance report (PCR) – DRD . 28
Annex C (informative) Inspection levels, acceptance quality limits (AQL)
and limiting quality levels (LQ) for inspection of fasteners . 30
Bibliography . 32

Figures
Figure 4-1: Tolerance of head-to-shank fillet profile . 14
Figure 4-2: Location of microsections for metallurgical examination . 15
Figure 4-3: Area delimiting interruptions in grain flow in the head-to-shank region . 16
Figure 4-4: Example of a regular grain flow in a threaded surface . 16
Figure 4-5: Locations for hardness testing (indicated with cross symbol) . 18
Figure 4-6: Loading schematic for tensile testing of threaded fasteners . 21
Figure 4-7: Schematic of an example of double-shear loading jigs . 22

Tables
Table 4-1: Maximum allowed values of the extension C of the distorted area shown in
Figure 4-1 . 14
Table C- 1: Inspection levels, acceptance quality limits (AQL) and limiting quality levels
(LQ) for inspection of fasteners . 30

Foreword
This document (EN 16602-70-46:2014) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-46:2014) originates from ECSS-Q-ST-70-46C Rev.1.
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 April 2015,
and conflicting national standards shall be withdrawn at the latest by April
2015.
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. CEN [and/or CENELEC] shall not be held
responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the
European Commission and the European Free Trade Association.
This document has been developed to cover specifically space systems and has
therefore precedence over any EN covering the same scope but with a wider
domain of applicability (e.g. : aerospace).
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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Scope
This Standard defines the requirements for manufacturing, provision,
inspection and quality control of high-quality threaded fastening devices (bolts,
nuts, studs and screws) hereafter referred to as threaded fasteners or fasteners,
used in space hardware.
This Standard does not include a complete review of the factors relevant to the
fabrication of high quality threaded fasteners. It provides the definition of the
technical requirements and quality control procedures to be applied in the
fabrication and supply of threaded fasteners for spacecraft applications.
Fasteners for spacecraft applications are those aerospace standard fasteners (i.e.
in accordance with LN, DIN or other national or international aerospace
standards), or those fasteners meeting or exceeding the requirements in
ISO 4759-1 for “Product grade A”, which also fulfil the requirements for space
applications as specified in the present document.
Normative references
The following dated normative documents are called by the requirements of
this ECSS Standard and therefore constitute requirements to it. Subsequent
amendments to, or revisions of any of these publications do not apply.
NOTE However, parties to agreements based on this
ECSS Standard are encouraged to investigate the
possibility of applying the most recent editions of
the normative documents indicated below.
EN reference Reference in text Title
EN 16601-00-01 ECSS-S-ST-00-01C ECSS system – Glossary of terms
EN 16603-30-01 ECSS-E-ST-30-01C Space engineering — Fracture control
EN 16602-70 ECSS-Q-ST-70C Space product assurance — Materials, parts and
processes
EN 16602-70-02 ECSS-Q-ST-70-02C Space product assurance — Thermal vacuum
outgassing test for the screening of space materials
EN 16602-70-29 ECSS-Q-ST-70-29C Space product assurance — The determination of
offgassing products from materials and assembled
articles to be used in a manned space vehicle crew
compartment
EN 16602-70-36 ECSS-Q-ST-70-36C Space product assurance — Material selection for
controlling stress-corrosion cracking
EN 16602-70-37 ECSS-Q-ST-70-37C Space product assurance — Determination of the
susceptibility of metals to stress— corrosion cracking
EN 16602-70-71 ECSS-Q-ST-70-71C Space product assurance — Data for selection of
space materials
ISO 204 Metallic materials — Uninterrupted uniaxial creep
testing in tension — Method of test
ISO 225 Fasteners — Bolts, screws, studs and nuts — Symbols
and designations of dimensions
ISO 1502 ISO general — purpose metric screw threads —
Gauges and gauging
EN reference Reference in text Title
ISO 2859-1 Sampling procedures for inspection by attributes,
Part 1: Sampling schemes indexed by acceptance
quality limit (AQL) for lot-by-lot inspection
ISO 2859-2 Sampling procedures for inspection by attributes,
Part 2: Sampling plans indexed by limiting quality
(LQ), for isolated lots inspection
ISO 3353-1:2002 Aerospace — Lead and runout threads — Part 1:
Rolled external threads
ISO 3800 Threaded fasteners – Axial load fatigue testing – Test
methods and evaluation of results
ISO 4759-1 Tolerances for fasteners — Part 1: Bolts, screws, studs
and nuts — Product grades A, B and C
ISO 6157-2 Fasteners — Surface discontinuities – Part 2: Nuts
ISO 6157-3 Fasteners – Surface discontinuities – Part 3: Bolts,
screws and studs for special requirements
ISO 6506-1 Metallic materials — Brinell hardness test — Part 1:
Test method
ISO 6506-2 Metallic materials — Brinell hardness test — Part 2:
Verification and calibration of testing machines
ISO 6506-3 Metallic materials — Brinell h
...