SIST EN 4620:2010

SLOVENSKI STANDARD
01-maj-2010
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Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys - Design
standard
Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden, selbstsichernd, mit
selbsträumenden Stiften - Konstruktionsnorm
Série aérospatiale - Douilles filetées, à filetage MJ, à freinage interne, à clavettes auto-
brochantes - Norme de conception
Ta slovenski standard je istoveten z: EN 4620:2010
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 4620
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2010
ICS 49.030.30
English Version
Aerospace series - Inserts, MJ threads, self-locking, with self-
broaching keys - Design standard
Série aérospatiale - Douilles filetées, à filetage MJ, à Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden,
freinage interne, à clavettes auto-brochantes - Norme de selbstsichernd, mit selbsträumenden Stiften -
conception Konstruktionsnorm
This European Standard was approved by CEN on 9 January 2010.

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 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 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 and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4620:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Design .4
4 Use .5
4.1 General .5
4.2 Performance .5
4.3 Installation restrictions .6
5 Required characteristics – Installation hole .7
6 Installation .9
7 Provisions for component salvage .9
8 Designation .9
9 Indication on drawings .9
9.1 Methods of drawing .9
9.2 Examples of definition drawing . 10
9.3 Example of assembly drawing . 11

Foreword
This document (EN 4620:2010) 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 2010, and conflicting national standards shall be
withdrawn at the latest by September 2010.
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 and the United Kingdom.
1 Scope
This standard specifies the applications and installation hole dimensions for EN standard, self-locking,
self-broaching key, MJ thread inserts and provisions for component salvage, for aerospace applications.
2 Normative references
The following referenced documents are indispensable for the application 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 4619, Aerospace series — Inserts, MJ threads, self-locking, with self-broaching keys — Installation and
removal procedure
EN 4621, Aerospace series — Inserts, MJ threads, self-locking, self-broaching keys — Technical specification
ISO 5855-1, Aerospace — MJ threads — Part 1: General requirements
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts
3 Design
NOTE Typical examples of installed inserts are shown in Figures 1 and 2.
3.1 The threaded self-locking inserts may be used in tapped blind holes and tapped through holes. The
minimum flange thickness dimensions K given in Tables 3 to 5 are less than the insert length. When using
a
these minimum flange thicknesses, protrusion of the inserts will occur (see Figure 5, footnote ). Designers
shall therefore ensure that the inser
...