EN 4694:2017

Aerospace series - Tie rod with integrated bolts - Assembly code D, E and F

This European Standard specifies the dimensions and tolerances of rod assemblies for aerospace applications with two adjustable ends with integrated bolts for interior and sub structure in the temperature range -55 °C to 85 °C. The rod ends should not be screwed completely apart.

Luft- und Raumfahrt - Zug-Druck-Stange mit integrierten Bolzen - Variante D, E und F

Série aérospatiale - Bielle avec axes intégrés - Code assemblage D, E et F

Aeronavtika - Zglobna ročica z vgrajenim sornikom - Montažne kode D, E in F

Ta evropski standard določa mere in tolerance sestavov ročic z dvema nastavljivima končnikoma z vgrajenimi sorniki za uporabo v aeronavtiki v notranjosti ali podstrukturah v temperaturnem razponu od –55 °C do 85 °C. Končnika ročice ne smeta biti privita tako, da sta povsem narazen.

General Information

• Status: Published
• Publication Date: 10-Oct-2017
• Withdrawal Date: 10-Apr-2018
• ICS: 49.035 - Components for aerospace construction
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3 - Mechanical
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 11-Oct-2017
• Completion Date: 11-Oct-2017
• Ref Project: SIST EN 4694:2017 - Aerospace series - Tie rod with integrated bolts - Assembly code D, E and F

Overview

EN 4694:2017 is a CEN European Standard in the Aerospace series that specifies the dimensions, tolerances and basic materials for tie rod assemblies with integrated bolts (assembly codes D, E and F) used in aircraft interiors and sub-structure. It covers rod assemblies with two adjustable ends and integrated bolts for operation in the temperature range −55 °C to 85 °C, and requires that the rod ends should not be screwed completely apart.

Key topics and technical requirements

• Assembly codes D, E and F - geometries and configuration are defined by figures and tables in the standard. Key dimensional data given:
  • Nominal bolt diameters: d = 25.4 mm and d = 22.2 mm
  • Adjustable length range: ±12.7 mm
  • For overall length L < 330 mm, rod outer diameter is 22.2 mm (no swaging)
• Dimensions, tolerances and mass - dimensions in millimetres; tolerances and masses per the specified tables; general tolerances per ISO 2768-mK.
• Materials and surface treatments - two material codes (A and B) define combinations such as aluminium alloys (WL 3.1354), stainless steels (WL 1.4548), titanium bushes (EN 3311), PPS inserts, and silicon-rubber washers. Surface finishes reference LN 9368 and ISO 8075 where applicable.
• Locking clips - described in EN 4692 and referenced here; two clip types:
  • Type A - prevents rotation of fork/eye ends
  • Type B - prevents rotation and transmits tension/compression loads (available RH and LH)
• Subcomponents and accessories - snap rings (DIN 6799), bearings (EN 4614), adhesives and activators for locking (examples given).
• Marking, mass calculation and designation - methods for marking and rules for mass calculation are included to support procurement and weight budgeting.

Applications and practical value

• Designed for aircraft interior and secondary sub-structure tie-rod requirements where adjustable length with integrated bolts is needed.
• Used in applications requiring consistent interchangeability, traceability and predictable mechanical interfaces (e.g., actuator linkages, trim or control secondary linkages inside cabins, structural/joining elements in interiors).
• Useful for design, manufacturing, inspection, procurement and maintenance activities to ensure parts meet aerospace tolerances, material and safety expectations.

Who should use EN 4694:2017

• Aerospace design and structural engineers specifying tie rods
• Component manufacturers and machinists producing rod assemblies
• Quality assurance and inspection teams verifying conformity
• Procurement specialists sourcing standardized aerospace hardware
• Certification and regulatory personnel referencing accepted standards

Related standards

• EN 4691-1 (technical specification for tie rods)
• EN 4692 (locking clip)
• EN 4614 (spherical plain bearings)
• ISO 2768 (general tolerances)
• ISO 8075 (surface treatments)

Keywords: EN 4694:2017, tie rod with integrated bolts, aerospace standard, assembly code D E F, dimensions tolerances, locking clip, material code A B, adjustable tie rod.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2017
$HURQDYWLND=JOREQDURþLFD]YJUDMHQLPVRUQLNRP0RQWDåQHNRGH'(LQ)
Aerospace series - Tie rod with integrated bolts - Assembly code D, E and F
Luft- und Raumfahrt - Zug-Druck Stange mit integrierten Bolzen - Zusammenbaucode D,
E und F
Série aérospatiale - Bielle avec axes intégrés - Code assemblage D, E et F
Ta slovenski standard je istoveten z: EN 4694:2017
ICS:
49.035 Sestavni deli za letalsko in Components for aerospace
vesoljsko gradnjo construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4694
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2017
EUROPÄISCHE NORM
ICS 49.035
English Version
Aerospace series - Tie rod with integrated bolts - Assembly
code D, E and F
Série aérospatiale - Bielle avec axes intégrés - Code Luft- und Raumfahrt - Zug-Druck Stange mit
assemblage D, E et F integrierten Bolzen - Zusammenbaucode D, E und F
This European Standard was approved by CEN on 25 June 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4694:2017 E
worldwide for CEN national Members.

Contents
Page
European foreword . 3
Introduction. 4
1 Scope . 5
2 Normative references . 5
3 Requirements . 6
4 Assembly code definitions . 6
5 Materials . 8
6 Locking clips . 9
7 Fork and eye ends . 10
8 Mass calculation of tie rods . 18
9 Marking . 21
10 Dimensions . 22
11 Designation . 22
12 Technical specification . 22
Annex A (informative) Standard evolution form . 23

European foreword
This document (EN 4694:2017) 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,
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 April 2018, and conflicting national standards shall be withdrawn at
the latest by April 2018.
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.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
Aerospace and Defence Standardization (ASD-STAN) draws attention to the fact that it is claimed that
compliance with this document may involve the use of a patent.
USA: US 8371767
China: CN 10104431
Japan: JP 4885140
Russia: RU 2389914
South Africa: ZA 2007/03913
Canada: 2584387
South Korea: 7011559
ASD-STAN takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured ASD-STAN that he/she is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this
respect, the statement of the holder of this patent right is registered with ASD-STAN. Information may be
obtained from:
GMT Gummi-Metall-Technik GmbH
Liechtersmatten 5
D-77815 Bühl
TRIGUM Engineering GmbH
Brunskamp 4
D-21220 Seevetal/Maschen
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights other than those identified above. ASD-STAN shall not be held responsible for identifying any or all
such patent rights.
1 Scope
This standard specifies the dimensions and tolerances of rod assemblies for aerospace applications with two
adjustable ends with integrated bolts for interior and sub structure in the temperature range − 55 °C to 85
°C. The rod ends should not be screwed completely apart.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
1)
DIN 6799, Retaining washers for shafts
1)
DIN 65038-1, Aerospace — Steel, nickel- and cobalt-alloy bars — Technical specification
EN 2424, Aerospace series — Marking of aerospace products
EN 3311, Aerospace series — Titanium alloy TI-P64001 (Ti-6Al-4V) — Annealed — Bar for machining —
D < 110 mm
EN 4614, Aerospace series — Spherical plain bearings in corrosion resisting steel with self-lubricating liner
wide series — Dimensions and loads — Inch series

EN 4691-1, Aerospace series — Tie rod with integrated bolts — Part 1: Technical specification
EN 4692, Aerospace series — Tie rod with integrated bolts — Locking clip
EN 10088-3, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire,
sections and bright products of corrosion resisting steels for general purposes
ISO 2768-1, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual
tolerance indications
ISO 2768-2, General tolerances — Part 2: Geometrical tolerances for features without individual tolerance
indications
ISO 8075, Aerospace series — Surface treatment of hardenable stainless steel parts
LN 9368-4, Aerospace — Designation of surface treatments — Part 4: Code numbers for methods of anodic
1)
treatment
LN 9368-7, Aerospace — Designation of surface treatments — Part 7: Code numbers for methods of organic
1)
coating
WL 1.4548 (all parts), Aerospace — Precipitation-hardening stainless chromium-nickel-copper steel with
1)
approx. 0,05C-16Cr-4Cu-4Ni
1)
WL 3.1354 (all parts), Aerospace — Wrought aluminium alloy with approx. 4,4Cu-1,5Mg-0,6Mn
2)
FAR/JAR/CS 25.853, Compartment Interiors

1)
Published by: Beuth Verlag GmbH. www.beuth.de
2)
Published by: European Aviation Safety Agency, Postfach 101253, D-50452 Koeln, Germany
3 Requirements
3.1 Configuration, dimensions, tolerances and mass
3.1.1 Configuration
The configuration shall be in accordance with Figure 1, Figure 2 and Figure 3.
3.1.2 Dimensions, tolerances and mass
Dimensions are in millimetres, tolerances and masses in accordance to Table 4, Table 5, Table 6, Table 7 and
Table 8. General tolerances shall be in accordance to ISO 2768-mK. Missing dimensions are manufacturing
options.
4 Assembly code definitions
Assembly code D, E and F are shown in Figure 1, Figure 2 and Figure 3. For assembly code D, E and F:
d = 25,4 mm, d = 22,2 mm and adjustable range for L = ± 12,7 mm. For L less than 330 mm outer
1 3 1 1
diameter of the rod body d = 22,2 mm (no swaging).
Key
1 – 2 – 4 – 5 – 6 - 7 and 8 The position numbers and the materials are shown in Table 1 and Table 2.
Figure 1 — Assembly code D
Key
1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 and 9 The position numbers and the materials are shown in Table 1 and
Table 2.
Figure 2 — Assembly code E
Key
1 – 3 – 5 – 6 – 8 and 9 The position numbers and the materials are shown in Table 1 and Table 2.
Figure 3 — Assembly code F
5 Materials
See Table 1 and Table 2.
Table 1 — Material code A
Position Description Material Surface treatment
For diame
...