SIST EN 2602:2006

• Abstract:

  This standard specifies the dimensional characteristics of ports for the adaptors, threaded, with lockring, assembly with elastomer O ring, for aerospace applications.; This standard applies to all adaptors with lockring whose port end is defined by EN 2603.

• Status: Published
• Publication Date: 31-Aug-2006
• ICS: 49.030.99 - Other fasteners
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2006
• Due Date: 01-Sep-2006
• Completion Date: 01-Sep-2006
• Ref Project: EN 2602:2005 - Aerospace series - Ports for adaptors, threaded, with lockring - Geometric configuration

• Refers: SIST EN 13848-1:2004+A1:2008 - Railway applications - Track - Track geometry quality - Part 1: Characterisation of track geometry
• Effective Date: 28-Jan-2026
• Refers: oSIST prEN 415-2:2022 - Safety of packaging machines - Part 2: Packaging machines for pre-formed rigid containers
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2606:2009 - Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 3270:2004 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Blanking plugs with lockring
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2605:2006 - Aerospace series - 24° interface for adaptors, threaded, with lockring - Geometric configuration
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 3248:2002 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Adaptors, reduced pipe end, with lockring
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2604:2006 - Aerospace series - 8° 30' interface for adaptors, threaded, with lockring - Geometric configuration
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2603:2006 - Aerospace series - Port ends for adaptors, threaded, with lockring - Geometric configuration
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2608:2006 - Aerospace series - Installation and removal requirements for 8° 30' adaptors, threaded, with lockring
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2607:2006 - Aerospace series - O-rings for adaptors, threaded, with lockring - Survey
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 3566:2004 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Adaptors with lockring
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4510:2018 - Aerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001, adapters, straight, double end, with locking ring
• Effective Date: 28-Jan-2026

SIST EN 2602:2006 is the Slovenian adoption of EN 2602:2005, published by SIST for aerospace applications. It specifies the dimensional characteristics of ports for threaded adaptors with a lockring, used in assemblies with an elastomer O-ring. In practice, it is the reference for designers, manufacturers, inspectors, and buyers who need the port geometry to match the linked adaptor system.

What does SIST EN 2602:2006 specify?

SIST EN 2602:2006 specifies the geometric configuration and dimensions of ports for threaded adaptors with a lockring. It applies to adaptor ports whose port end is defined by EN 2603, so it is used together with the related port-end standard.

The document is organized into:

• Foreword
• Clause 1 - Scope
• Clause 2 - Normative references
• Clause 3 - Required characteristics
• Clause 4 - Designation

Clause 3 gives the technical geometry, while Clause 4 gives the identification format used on drawings and in procurement documents.

What are the key requirements of SIST EN 2602:2006?

SIST EN 2602:2006 ties the port geometry to specific adaptor interfaces and MJ threads, so the port and adaptor can be matched without ambiguity. The main practical outcome is that the port is defined as a controlled machined feature, not just a generic hole.

• Clause 1 limits use to adaptors with a lockring and an elastomer O-ring assembly for aerospace applications. This matters because the port is part of a sealing and retention system, not a standalone threaded opening.
• Clause 3.1, Table 1 gives the cross-references between port codes and the 8°30', 24°, and 60° adaptor variants. This is what lets a designer choose the correct code for the intended adaptor family.
• Clause 3.2, Figure 1 and Table 2 define the port geometry and the associated dimensions. The table covers the features needed for manufacture and inspection, including thread, pitch diameter, minor diameter, tooth count, and tool-related dimensions.
• Table 2 states that the dimensions correspond to the pipe nominal outside diameter. In practice, that connects the port size to the pipe size the system is meant to carry.
• Table 2 uses MJ thread dimensions from ISO 5855-3, with two specific exceptions: MJ 6 × 1, and the modified minor diameter used to center the broaching tool. This tells machining and inspection teams which thread rules to apply.
• Clause 3.3 requires surface roughness according to Figure 1 unless the design documentation says otherwise. That means surface finish is part of the definition and can affect sealing and manufacturability.
• Clause 4 defines the designation format as EN 2602-code. This is the form used to identify the port size on drawings and in orders.

What terms does SIST EN 2602:2006 define?

SIST EN 2602:2006 uses several terms that are important for reading the geometry correctly.

• Port - the machined opening in the adaptor body that receives the threaded connection.
• Lockring - the retaining ring used with the adaptor to hold the assembly arrangement.
• Elastomer O-ring - the sealing element used in the adaptor assembly.
• MJ threads - aerospace metric threads governed by ISO 5855-1 and ISO 5855-3.
• Port end - the end geometry of the adaptor defined by EN 2603.
• Designation - the identity block format EN 2602-code used to reference a specific port size.

Who uses SIST EN 2602:2006?

SIST EN 2602:2006 is used by aerospace component designers, adaptor manufacturers, machining suppliers, and inspection teams. Quality managers use it to check that the port geometry matches the specified code and surface condition.

Buyers and procurement teams use the designation format when ordering parts or comparing offers. It is also relevant to organisations that need the port to mate correctly with the related EN 2603 port end and the associated adaptor interfaces.

What changed in SIST EN 2602:2006 from the previous edition?

SIST EN 2602:2006 is identical to EN 2602:2005.

Which standards are used with SIST EN 2602:2006?

The following referenced documents support application of SIST EN 2602:2006:

• ISO 5855-1 - gives the general requirements for MJ threads.
• ISO 5855-3 - gives the limit dimensions for MJ threads in fluid systems.
• EN 2603 - defines the port end for adaptors with lockring that this standard applies to.
• EN 2604 - covers the 8°30' interface for adaptors with lockring.
• EN 2605 - covers the 24° interface for adaptors with lockring.
• EN 2606 - covers the 60° interface for adaptors with lockring.

These references matter because Table 1 links the port codes to the adaptor interfaces, and the thread limits are taken from the ISO MJ thread standards.

What does the SIST EN 2602:2006 document contain?

SIST EN 2602:2006 contains one cross-reference table and one detailed dimensional table for the port geometry. Figure 1 shows the configuration and names the measured features, including the tooling dimensions and the thread-related geometry used for manufacture.

Clause 3 also gives the surface roughness requirement linked to the figure, so the document is useful both for design and for inspection planning. Clause 4 gives a simple designation system, EN 2602-code, for use on drawings, records, and orders.

SLOVENSKI STANDARD
01-september-2006
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Aerospace series - Ports for adaptors, threaded, with lockring - Geometric configuration
Luft- und Raumfahrt - Einschraublöcher für gerade Einschraubverschraubungen mit
Sicherungsring - Konstruktionsblatt
Série aérospatiale - Orifices pour raccords droits, filetés, avec bague de sécurité -
Configuration géométrique
Ta slovenski standard je istoveten z: EN 2602:2005
ICS:
49.030.99
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 2602
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 49.030.99
English Version
Aerospace series - Ports for adaptors, threaded, with lockring -
Geometric configuration
Série aérospatiale - Implantation des raccords droits Luft- und Raumfahrt - Einschraublöcher für gerade
métriques avec bague de sécurité - Dimensions Einschraubverschraubungen mit Sicherungsring -
Konstruktionsblatt
This European Standard was approved by CEN on 28 October 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2602:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Required characteristics .5
4 Designation .8

Foreword
This European Standard (EN 2602:2005) has been prepared by the European Association of Aerospace
Manufacturers - Standardization (AECMA-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-
ceived the approval of the National Associations and the Official Services of the member countries of AECMA,
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 2006, and conflicting national standards shall be withdrawn at the
latest by June 2006.
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, Cyprus, Czech Republic, Den-
mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-
bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the
United Kingdom.
1 Scope
This standard specifies the dimensional characteristics of ports for the adaptors, threaded, with lockring,
assembly with elastomer O-ring, for aerospace applications.
This standard applies to all adaptors with lockring whose port end is define
...