prEN 6052

Aerospace series - Rivet-collar-system, aluminium alloy, shear type, inch series - Technical Specification

This document defines the requirements for qualification, acceptance, delivery and inspection of 100° countersunk head, 100° countersunk reduced head and protruding head close tolerance pins, shear type in aluminium alloy 7050T73 and collars of aluminium alloy 3003 and of aluminium alloy 6061T7 for use as permanent fasteners in aerospace applications.

Luft- und Raumfahrt - Passniet-Schließring-System aus Aluminiumlegierung für Scherbeanspruchung, Zöllige Reihe - Technische Lieferbedingungen

No Scope available

Série aérospatiale - Système rivet-collier, alliage d'aluminium, type cisaillement, série en inches - Spécification technique

Le présent document définit les exigences relatives à la qualification, la réception, la livraison et le contrôle des broches à tête fraisée 100°, à tête fraisée réduite 100° et à tête saillante, à tolérance serrée et de type cisaillement en alliage d’aluminium 7050-T73, ainsi que des colliers en alliages d’aluminium 3003 et 6061-T7, pour une utilisation en tant qu’élément de fixation permanent dans les applications aérospatiales.

Aeronavtika - Sistem zakovic, aluminijeva zlitina, strižni tip, palčne mere - Tehnična specifikacija

General Information

• Status: Not Published
• ICS: 49.030.60 - Rivets
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3/S 2 - Fasteners
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Due Date: 18-Feb-2021
• Completion Date: 18-Feb-2021
• Ref Project: oSIST prEN 6052:2021 - Aerospace series - Rivet-collar-system, aluminium alloy, shear type, inch series - Technical Specification

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 6052:2021
01-januar-2021
Aeronavtika - Sistem zakovic, aluminijeva zlitina, strižni tip, palčne mere -
Tehnična specifikacija

Aerospace series - Rivet-collar-system, aluminium alloy, shear type, inch series -

Technical Specification
Luft- und Raumfahrt - Passniet-Schließring-System aus Aluminiumlegierung für
Scherbeanspruchung, Zöllige Reihe - Technische Lieferbedingungen

Série aérospatiale - Rivet-bague-systéme, alliage d'aluminium, type cisaillement, série

en inches - Specification Technique
Ta slovenski standard je istoveten z: prEN 6052
ICS:
49.025.20 Aluminij Aluminium
49.030.60 Kovice Rivets
oSIST prEN 6052:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 6052:2021
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oSIST prEN 6052:2021
DRAFT
EUROPEAN STANDARD
prEN 6052
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2020
ICS 49.030.60
English Version
Aerospace series - Rivet-collar-system, aluminium alloy,
shear type, inch series - Technical Specification

Série aérospatiale - Rivet-bague-systéme, alliage Luft- und Raumfahrt - Passniet-Schließring-System aus

d'aluminium, type cisaillement, série en inches - Aluminiumlegierung für Scherbeanspruchung, Zöllige

Specification Technique Reihe - Technische Lieferbedingungen

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-

STAN.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 6052:2020 E

worldwide for CEN national Members.
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oSIST prEN 6052:2021
prEN 6052:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 5

4 General requirements ................................................................................................................................... 5

5 Requirements for pins in aluminium alloy 7050T73 ......................................................................... 5

6 Requirements for collars in aluminium alloy 3003 and 6061 ..................................................... 10

7 Certification and quality assurance ....................................................................................................... 12

7.1 Qualification tests ........................................................................................................................................ 12

7.2 Quality conformance inspection ............................................................................................................. 12

7.3 Quality control records .............................................................................................................................. 12

7.4 Lot ...................................................................................................................................................................... 12

8 Delivery............................................................................................................................................................ 22

8.1 Unit type containers .................................................................................................................................... 22

8.2 Unit packages ................................................................................................................................................. 22

9 Quality management system .................................................................................................................... 22

Annex A (informative) Record of revisions ..................................................................................................... 23

Bibliography ................................................................................................................................................................. 24

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oSIST prEN 6052:2021
prEN 6052:2020 (E)
European foreword

This document (prEN 6052:2020) has been prepared by the Aerospace and Defence Industries

Association of Europe - Standardization (ASD-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

ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
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oSIST prEN 6052:2021
prEN 6052:2020 (E)
1 Scope

This document defines the requirements for qualification, acceptance, delivery and inspection of 100°

countersunk head, 100° countersunk reduced head and protruding head close tolerance pins, shear

type in aluminium alloy 7050T73 and collars of aluminium alloy 3003 and of aluminium alloy 6061T7

for use as permanent fasteners in aerospace applications.
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 3115, Aerospace series — Aluminium alloy 7050-T73 — Wire for solid rivets — D ≤ 10 mm

, Sampling procedures and Tables for Inspection by Attributes
ANSI/ASQC-Z1.4
ASME-B46.1 , Surface texture (Surface Roughness, Waviness, and Lay)

ASTM-B193 , Standard Test Method for Resistivity of Electrical Conductor Materials

, Standard Practice for Liquid Penetrant Testing
ASTM-E1417
ASTM-E8 , Standard Test Method for Tension Testing of Metallic Materials

ASTM-E92 , Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials

, Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable

ASTM-G-110
Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution
NASM1312 , Fastener Test Methods
QQ-A-430 , Aluminium Alloy Rod and Wire, for Rivets and Cold Heading
SAE AMS2644 , Inspection Material, Penetrant

Published by: Department of Defense (DoD), the Pentagon, Washington, D.C., 20307, USA.

Published by: American Society for Testing and Materials, 100 Barr Harbor Dr., West Conshohocken, P.A., 19428,

USA.

Published by: Aerospace Industries Association of America Inc. (AIA), 1250 Eye Street, N.W., Washington, D.C.,

20005 3924, USA.

Published by: Superindendent of documents, US Government Printing House, Washington, D.C., 20402, USA.

Published by: Engineering Society for Advancing Mobility Land, Sea, Air and Space International (SAE),

400 Commonwealth Drive, Warrendale, P.A., 15096-0001, USA.
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3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 General requirements

The close tolerance pins and collars covered by this specification shall be of the types, sizes,

configurations and materials designated by the part numbers specified on the applicable standards that

refer to this specification.
5 Requirements for pins in aluminium alloy 7050T73

The requirements for 7050T73 aluminium alloy pins, shear type are given in Table 1. These

requirements complement the requirements of all other standards or specifications referenced in the

document of the pins and may be overridden only when specially instructed in the definition document.

Inspection tests given in Table 1 and Table 2 are mandatory (except as noted) on each lot as defined in

7.2 for the fastener manufacturer. Tests that are not mandatory for the fastener manufacturer may be

applied by the receiving contractor.
Table 1 — Requirements for pins in aluminium alloy 7050T73

Clause Characteristic Technical requirement Inspection and Qualification Acceptance

test method Sampling Sampling
5.1 General The dimensions and any Conventional According to According
dimensions deviations in form and position, measuring Table 3 to Table 5
measured at ambient methods
temperature, shall be within the
limits specified in the standard
part drawings and this
procurement specification
5.2 Shank Underfill permissible, shall be Standard
diameter within the specified shank micrometre
diameter range 6,35 mm (¼”)
diameter
5.3 Shank Refer to Table 8 Conventional
straightness measuring
methods
5.4 Sealant escape Refer to Figure 3 and Table 10
groove
5.5 Head According to standard part In accordance with
protrusion drawings EN pin standards
(100° heads)
5.6 Surface texture Visual
examination
according to
ANSI-B46.1
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Clause Characteristic Technical requirement Inspection and Qualification Acceptance

test method Sampling Sampling
5.7 Lubricants According to
applicable
5.8 Finish
specification and
visual examination
5.9 Product Visual
identification examination
5.10 Delivery Refer to Clause 8 N/A

5.11 Shear strength Table 7 double shear values are Test no 13 of According to According

applicable for pins having a grip NASM1312 Table 3 to Table 6
of 2 × nominal diameter or
greater for protruding head type
and grip of 2,5 × nominal
diameter or greater for flush
head type. If the pin is too short
to perform the shear test, a piece
of wire of the same raw material
lot heat treated with the
fasteners shall be tested. The
test wire shall have the same
coating as for pins.
Minimum shear strength test of
fasteners is to be performed on
pins or wire without cetyl
alcohol lubrication applied.
5.12 Tensile Table 7 values are applicable for Test no. 8 of
strength pins having a grip of NASM1312
1,5 × nominal diameter or
greater.
Qualification and acceptance
testing shall be performed with a
7° sloped surface (collar side) in
minimum and maximum grip
with collar according to collar
standard.
5.13 Head dishing After installation in a clearance Test no. 8 of
fit of 0,025 mm, head dishing of NASM1312
flush head pins shall not exceed
0,076 mm (see Figure 6).
Testing shall be performed with
a 7° sloped surface (collar side)
in minimum and maximum grip.
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oSIST prEN 6052:2021
prEN 6052:2020 (E)

Clause Characteristic Technical requirement Inspection and Qualification Acceptance

test method Sampling Sampling
5.14 Pin break load Table 7 values are applicable.
Tensile load shall be applied Test no. 8 of
axially at a rate, which breaks NASM1312
the pin at a minimum of 4 s of
load application.
Test plate countersink for
countersunk pins shall have
2° angular misalignment from
the hole centreline.
Test plate for protruding head
pins shall have a 2° slope under
the pin head.
After evaluation of the pin break ASTM-E1417
loads, head dishing of flush head
pins shall not exceed 0,076 mm
(see Figure 6).
Cracks shall not be allowed in
any location of the pin. The
presence of cracks shall be
determined by fluorescent
penetrant inspection according
to ASTM-E1417, method B or D,
sensitivity level 2 or higher.
The penetrant materials used
shall be according to
SAE AMS2644. Examine all
surfaces at 10 × to
30 × magnification.
Penetrant inspection shall be
performed prior to all surface
coating and lubricating.

5.15 Preload Table 7 values are applicable to Test no. 16 of According to According

pins having a nominal grip of NASM1312 Table 3 to Table 6
1,5 × nominal diameter or
greater.
Qualification testing shall be
performed with a 7° sloped
surface (collar side) in minimum
and maximum grip with a collar
having low strength according to
collar standard.
Acceptance testing shall be
performed with a 7° sloped
surface (collar side) in minimum
and maximum grip.
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Clause Characteristic Technical requirement Inspection and Qualification Acceptance

test method Sampling Sampling
5.16 Fatigue life Average life 65 000 cycles, Test no. 11 of N/A
minimum life 45 000 cycles, NASM1312
loads according to Table 7.
Tests shall be performed on pins
having a grip of 3 × nominal
diameter.
Tests shall be performed in
maximum grip condition.
5.17 Installation Pins shall be pulled into Use standard N/A
0,076 mm ± 0,005 mm pneumatic
interference fit in 2024T3 installation tools
aluminium plate in maximum and conventional
grip. measuring
methods.
No premature breakage of the
standard installation pintail shall
occur. Installation load shall not For all installation
exceed 90 % of minimum pin
tests, there shall
break load. Test to be performed
be a transition
using pins with longest grip
radius of 0,5 mm
length. to 0,7 mm on edge
of fastener hole
(head side).
Tests shall be
performed in
maximum grip
conditions with a
3° sloped surface
(collar side).
5.18 Test collars Test collars are specified in Refer to Table 7
Table 7 unless stated otherwise

5.19 Material 7050-T73 aluminium alloy Verify composition Each tenth lot from each mill

according to QQ-A-430 and
Verify mechanical Each lot
EN 3115, shear strength
properties
283 MPa to 324 MPa.
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Clause Characteristic Technical requirement Inspection and Qualification Acceptance

test method Sampling Sampling

5.20 Discontinuities Discontinuities shall be The presence of According to According

permitted only as outlined in cracks shall be Table 3 to Table 6
Figure 1 and Table 9. determined by
fluorescent
Specimens shall be prepared as
penetrant
shown in Figure 2. All surfaces
inspection
shall be examined at 10 × to
according to
30 × magnification. Indications
ASTM-E1417,
shall be evaluated by
method B or D,
metallurgical examination of
sensitivity level 2
cross sections at 50 × to
or higher.
60 × magnification.
Cracks shall not be allowed in Penetrant
any location of the pin. materials used
according to
Penetrant inspection shall be
SAE AMS2644.
performed prior to all surface
coating and lubricating or with
all coatings removed.
5.21 Electrical Requirements for EC [% IACS] ASTM-B193
conductivity shall be as follows:
Test shall be
(EC)
performed on a
wire from the
EC ≥ 40 %: Lot is acceptable
same wire lot and
EC ≥ 38 % and < 40 %: SCF test
heat treatment as
required
the pin or on top
of the pin head
EC < 38 %: Lot is rejectable
after smooth and
flat machining
(R = 32µm).
5.22 Stress Test shall be required if ASTM-E8
corrosion EC ≥ 38 % and < 40 % (see 5.21) (0,2 % offset
factor (SCF) method)
SCF shall be < 32 % and shall be
calculated as follows:
SCF = ys [Pa] − EC [% IACS]
Tensile yield strength shall be
measured on a wire from the
same wire lot and heat
treatment as the pin.
5.23 Intergranular Intergranular corrosion ASTM-G-110
corrosion according to ASTM-G-110
Localised intergranular
corrosion shall not exceed
0,3 mm in depth. Average depth
shall not exceed 0,2 mm.
5.24 Microstructure Microstructure shall be free
from bursts, voids and
overheating
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6 Requirements for collars in aluminium alloy 3003 and 6061

The requirements for collars in 3003 and 6061 aluminium alloy, shear type are given in Table 2. These

requirements complement the requirements of all other standards or specifications referenced in the

documents of the collars, and may be overridden only when specially instructed in the definition

document.

Inspection tests given in Table 1 and Table 2 shall be mandatory (except as noted) on each lot as

defined in 7.2 for the fastener manufacturer.
Table 2 — Requirements for collars in aluminium alloy 3003 and 6061

Clause Characteristic Technical requirement Inspection and Qualification Acceptance

test method Sampling Sampling
6.1 General The dimensions and any Conventional According to According to
dimensions deviations in form and position, measuring Table 4 Table 5
measured at ambient methods
temperature, shall be within the
limits specified in the standard
part drawings and this
procurement specification
6.2 Surface texture According to standard part Visual
drawings examination
according to
ANSI-B46.1
6.3 Lubricants According to
applicable
6.4 Finish
specification and
visual
examination
6.5 Product Visual
identification examination
6.6 Delivery Refer to Clause 8 N/A

6.7 Tensile The ultimate tensile strength of Test no. 8 of According to According to

strength the installed collar shall be equal NASM1312 Table 4 Table 6
to or greater than the values
shown in Table 7.
Qualification and acceptance
testing shall be performed with a
7° sloped surface (collar side) in
minimum and maximum grip
with collar according to collar
standard.
6.8 Preload The preload of the installed Test no. 16 of
collar shall be equal to or greater NASM1312
than the values shown in
Table 7.
Qualification and acceptance
testing shall be performed with a
7° sloped surface (collar side) in
minimum and maximum grip
wit
...