SIST EN 3385:2012
(Main)Aerospace series - Rings retaining, external, axial mounting, steel, vacuum cadmium plated
Aerospace series - Rings retaining, external, axial mounting, steel, vacuum cadmium plated
This European Standard defines the characteristics of axial mounting external retaining rings, in steel, vacuum cadmium plated, for aerospace applications.
Luft- und Raumfahrt - Sicherungsringe, axial auf Wellen montierbar, aus Stahl, vakuumverkadmet
Diese Norm legt die Merkmale von axial auf Wellen montierbaren Sicherungsringen aus Stahl, im Vakuum
verkadmet, zur Anwendung in der Luft- und Raumfahrt fest.
Série aérospatiale - Anneaux d’arrêt, à montage axial, type extérieur, en acier, cadmiés sous vide
La présente Norme Européenne définit les caractéristiques des anneaux d’arrêt, à montage axial, type extérieur, en acier, cadmiés sous vide, pour applications aérospatiales.
Aeronavtika - Varnostni obroči za zunanjo osno pritrditev, jekleni, vakuumsko kadmirani
Ta standard določa lastnosti jeklenih vakuumsko kadmiranih varnostnih obročev za zunanjo osno pritrditev v okrogle odprtine za uporabo v aeronavtiki.
General Information
- Status
- Published
- Publication Date
- 27-Mar-2012
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 23-Mar-2012
- Due Date
- 28-May-2012
- Completion Date
- 28-Mar-2012
Overview
EN 3385:2012 is a European aerospace standard prepared by ASD‑STAN and approved by CEN (approved 24 September 2011; published March 2012). It defines the required characteristics for external, axial mounting retaining rings manufactured from steel and finished by vacuum cadmium plating for aerospace applications. The standard establishes a common baseline for dimensions, materials, surface treatment, designation and references to mounting and marking practices.
Key points established by the standard include:
- Configuration, dimensions and approximate masses (presented in figure and table form)
- Material hardness requirements for spring steel
- Vacuum cadmium plating requirements on functional surfaces
- Designation, marking and associated normative references
Note: details of form not stated in the standard are left to the manufacturer’s option.
Key Topics
- Scope: Axial mounting external retaining rings in steel, vacuum cadmium plated, intended for aerospace use.
- Materials: Spring steel hardness is specified by diameter code ranges:
- 480–530 HV for diameter codes 008 to 038
- 440–510 HV for diameter codes 040 to 165
- Surface treatment: Vacuum deposition of cadmium in accordance with EN 2535. A deposit thickness of 5 µm to 9 µm is required on all surfaces that can be contacted by a 20 mm ball; other surfaces must have a continuous deposit (no specific thickness required).
- Dimensions & mass: Configuration, dimensional tolerances and mass figures are given in the standard’s tables and figure (refer to EN 3385:2012 Table 1 and Figure 1).
- Designation & marking: Example designation format and marking style follow EN 2424 (style G).
- Related procedural references: Technical specification and mounting guidance are referenced to EN 3380 and EN 3426 respectively.
Applications
EN 3385:2012 is intended to ensure consistent quality and interchangeability of external axial retaining rings used in aerospace assemblies. Typical practical benefits and applications include:
- Standardized parts for shafts and axial retention features in aircraft and aerospace subassemblies
- Defined material and hardness limits to ensure spring performance and fatigue resistance
- Controlled cadmium coating practice for enhanced corrosion resistance on functional contact surfaces
- Clear designation and marking for traceability and supply-chain consistency
These characteristics help procurement, design and maintenance teams specify and verify retaining rings that meet aerospace interchangeability and corrosion-protection expectations.
Related Standards
EN 3385:2012 references and works alongside the following standards (normative references):
- EN 2424 - Marking of aerospace products (marking style G referenced)
- EN 2535 - Vacuum deposition of cadmium (surface treatment thickness and practice)
- EN 3380 - Rings retaining - Technical specification (technical requirements)
- EN 3426 - Groove dimensions for axial mounting external retaining rings (mounting guidance)
For full implementation, consult EN 3385:2012 itself together with the listed normative references to ensure correct dimensions, materials, plating practice and mounting procedures are followed.
Frequently Asked Questions
SIST EN 3385:2012 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Rings retaining, external, axial mounting, steel, vacuum cadmium plated". This standard covers: This European Standard defines the characteristics of axial mounting external retaining rings, in steel, vacuum cadmium plated, for aerospace applications.
This European Standard defines the characteristics of axial mounting external retaining rings, in steel, vacuum cadmium plated, for aerospace applications.
SIST EN 3385:2012 is classified under the following ICS (International Classification for Standards) categories: 49.030.50 - Washers and other locking elements. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3385:2012 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2012
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NDGPLUDQL
Aerospace series - Rings retaining, external, axial mounting, steel, vacuum cadmium
plated
Luft- und Raumfahrt - Sicherungsringe, axial auf Wellen montierbar, aus Stahl,
vakuumverkadmet
Série aérospatiale - Anneaux d’arrêt, à montage axial, type extérieur, en acier, cadmiés
sous vide
Ta slovenski standard je istoveten z: EN 3385:2012
ICS:
49.030.50 Podložke in drugi blokirni Washers and other locking
elementi elements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 3385
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2012
ICS 49.030.50
English Version
Aerospace series - Rings retaining, external, axial mounting,
steel, vacuum cadmium plated
Série aérospatiale - Anneaux d'arrêt, à montage axial, type Luft- und Raumfahrt - Sicherungsringe, axial auf Wellen
extérieur, en acier, cadmiés sous vide montierbar, aus Stahl, vakuumverkadmet
This European Standard was approved by CEN on 24 September 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3385:2012: E
worldwide for CEN national Members.
Contents Page
Foreword . 3
1 Scope and field of application . 4
2 Normative references . 4
3 Required characteristics . 4
3.1 Configuration — Dimensions — Masses . 4
3.2 Materials . 4
3.3 Surface treatment . 4
4 Designation . 8
5 Marking. 8
6 Technical specification . 8
7 Mounting . 8
Foreword
This document (EN 3385:2012) 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 September 2012, and conflicting national standards shall be withdrawn
at the latest by September 2012.
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.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope and field of application
This standard defines the characteristics of axial mounting external retaining rings, in steel, vacuum cadmium
plated, for aerospace applications.
2 Normative references
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