EN 4852:2019

SLOVENSKI STANDARD
01-september-2019
Aeronavtika - Zunanje spiralne pogonske glave za navojne veznike - Geometrična
definicija in konfiguracija
Aerospace series - External spiral drive heads for threaded fasteners - Geometrical
definition and wrenching configuration
Luft- und Raumfahrt - Spiral-Außenantrieb für Schrauben - Definition der Geometrie und
Gestaltung des Schlüsselangriffs
Série aérospatiale - Têtes spiral external pour vis - Définition géometrique et
configuration déchirante
Ta slovenski standard je istoveten z: EN 4852:2019
ICS:
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4852
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 49.030.20
English Version
Aerospace series - External spiral drive heads for threaded
fasteners - Geometrical definition and fastener head
wrenching configuration
Série aérospatiale - Têtes à entraînement extérieur en Luft- und Raumfahrt - Spiral-Außenantrieb für
spirale pour éléments de fixation filetés - Définition Schrauben - Definition der Geometrie und Gestaltung
géométrique et configuration de serrage de la tête de des Schlüsselangriffs
fixation
This European Standard was approved by CEN on 12 November 2018.

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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4852:2019 E
worldwide for CEN national Members.

Contents
Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Required characteristics: Configuration — Dimensions — Tolerances . 5
4.1 Geometrical product specifications (GPS) . 6
5 Designation. 8
6 Configuration gauging . 8
6.1 Types of gauge . 8
6.1.1 GO Ring gauge . 8
6.1.2 NO-GO Ring gauge . 8
6.1.3 Fallaway gauge . 10
6.1.4 Fallaway root step GO-gauge . 10
6.1.5 Fallaway cylindrical GO-gauge . 11
6.1.6 Fallaway cylindrical step gauge . 11

European foreword
This document (EN 4852:2019) 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 November 2019, and conflicting national standards
shall be withdrawn at the latest by November 2019.
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, 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 Standardisation (ASD-STAN) draws attention to the fact that it is claimed that
compliance with this document may involve the use of a patent “Spiral Drive System for Threaded
Fasteners” EP1025370B1.
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:
Phillips Screw Company
301 Edgewater Drive, Suite 320
Wakefield, MA 01880
USA
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 European standard specifies dimensions and gauging system for external MORTORQ super bolt
head spiral drive system .
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.
ISO 1101, Geometrical product specifications (GPS) — Geometrical tolerancing — Tolerances of form,
orientation, location and run-out
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 http://www.iso.org/obp
 IEC Electropedia: available at http://www.electropedia.org/
4 Required characteristics: Configuration — Dimensions — Tolerances
Configuration shall be in accordance with Figure 1.
Dimensions and tolerances shall conform with Figure 1 and Table 1 and are expressed in millimetres.
®
1 External MORTORQ Super is the trade name of a product supplied by licensees of the Phillips Screw
Company. This information is given for the convenience of users of this European Standard and does not
constitute an endorsement by ASD-STAN nor CEN of the product named. Equivalent products may be used if they
can be shown to lead to the same results.
4.1 Geometrical product specifications (GPS)
In accordance with ISO 1101
Key
a
F Rad Ref
b
E Rad Ref
Figure 1 — Fastener head (viewed from above)
Table 1 — Basic wrenching configuration dimensions
E F
Drive code Drive size ∅A ∅B
Rad Ref Rad Ref
2,311 1,778
01 MTS-X1 0,079 0,089
2,261 1,727
3,023 2,324
02 MTS-X2 0,104 0,114
2,972 2,273
3,734 2,873
04 MTS-X4 0,13 0,142
3,658 2,797
4,623 3,556
05 MTS-X5 0,16 0,175
4,547 3,
...