EN 4849:2022
(Main)Aerospace series - Screw, 100° countersunk normal head, Spiral Drive Recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature)/425 °C
Aerospace series - Screw, 100° countersunk normal head, Spiral Drive Recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature)/425 °C
This document specifies the characteristics of externally threaded fasteners, 100° countersunk normal head, Spiral Drive Recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated, for aerospace applications.
Classification: 1 100 MPa /425 °C
Luft- und Raumfahrt - 100° Senkschraube mit Spiral Antrieb, enge Schafttoleranz, kurzes Gewinde, aus Titanlegierung, Aluminium IVD beschichtet - Klasse: 1 100 MPa (bei Raumtemperatur)/425 °C
Dieses Dokument legt die Eigenschaften von Verbindungselementen mit Außengewinde, 100° Senkkopfschraube, Spiral-Antrieb, enge Schafttoleranz, kurzes Gewinde, aus Titanlegierung, Aluminium-IVD-beschichtet, für Luft- und Raumfahrtanwendungen fest.
Série aérospatiale - Vis à tête fraisée normale 100°, empreinte en spirale, tige normale à tolérance large, filetage court, en alliage de titane, revêtue d’aluminium IVD - Classification : 1 100 MPa (à température ambiante)/425 °C
Le présent document spécifie les caractéristiques des éléments de fixation à filetage extérieur, à tête fraisée normale 100°, empreinte en spirale, tige normale à tolérance large, filetage court, en alliage de titane, revêtus d’aluminium IVD, pour les applications aérospatiales.
Classification : 1 100 MPa/425 °C.
Aeronavtika - Vijak, 100° ugrezna glava, spiralna vdolbina, ozka toleranca, kratek navoj, iz titanove zlitine, prevlečene z aluminijem IVD - Klasifikacija: 1100 MPa (pri temperaturi okolice)/425 °C
Ta dokument določa značilnosti zunanjih navojnih veznih elementov – 100° ugrezna glava, spiralna vdolbina, ozka toleranca, kratek navoj, iz titanove zlitine, prevlečenih z aluminijem IVD – za uporabo v aeronavtiki.
Klasifikacija: 1100 MPa/425 °C.
General Information
Overview
EN 4849:2022 is a CEN aerospace standard that specifies the characteristics of externally threaded countersunk screws for aerospace use. It covers 100° countersunk normal head screws with a Spiral Drive Recess, close‑tolerance normal shank, short thread, manufactured in titanium alloy and aluminium IVD coated. The fasteners are classified 1 100 MPa (ambient tensile strength) / 425 °C (maximum service temperature). The standard is intended for procurement, manufacture, inspection and certification of these specialized aerospace fasteners.
Key topics and requirements
- Configuration and dimensions: Detailed dimensional series, tolerances and mass tables for gauge sizes (see Figure 1 / Table 1 of EN 4849). Dimensions apply after surface treatment. Threads follow MJ profile per ISO 3353-1 / ISO 5855-2.
- Head and drive: 100° countersunk head with Spiral Drive Recess (e.g., MORTORQ® mentioned as an example); drive geometry governed by EN 4609.
- Materials: Titanium alloy per EN 3813 (typically Ti‑6Al‑4V for forgings and fasteners).
- Surface treatment: Aluminium IVD coating per EN 6118 (Type II, Class 3; 4 µm to 12 µm). After aluminium deposit, glass‑bead polishing and hexavalent‑chromium‑free passivation per MIL‑DTL‑5541 Type II Class 1A.
- Surface finish: Bearing surfaces Ramax = 0.8 µm; other surfaces Ramax = 3.2 µm; break sharp edges 0.1–0.4 mm.
- Lubrication: Optional cetyl alcohol lubrication per EN 6117 (code E).
- Marking and designation: Marking requirements per EN 2424; drive and hole codes specified.
- Quality and qualification: Manufacturer approval as an aerospace production organisation (e.g., EN 9100). Fastener qualification per ISO 9152 and EN 4609; qualification/acceptance testing following EN 9133 or agreed procedures.
- Patent notice: Use may involve patented Spiral Drive System (EP1025370B1). MORTORQ® is cited as an example trade name.
Applications and users
EN 4849:2022 is used where high‑performance, lightweight, corrosion‑resistant countersunk fasteners are required:
- Aerospace OEMs and aircraft structural designers specifying fasteners for airframe and structural components
- Fastener manufacturers producing titanium MJ threaded countersunk screws with IVD aluminium coating
- Procurement and quality assurance teams verifying conformity, marking and material traceability
- Maintenance, repair and overhaul (MRO) organizations replacing certified aerospace fasteners
Keywords: EN 4849:2022, aerospace screw, 100° countersunk, Spiral Drive Recess, titanium alloy fastener, aluminium IVD coating, MJ thread, MORTORQ, fastener specification.
Related standards
- EN 4609 - Spiral drive recess geometry and requirements
- EN 3813 - Titanium alloy TI‑P64001 (Ti‑6Al‑4V) for fasteners
- EN 6118 - Aluminium base protection (IVD) for fasteners
- EN 6117 - Lubrication of fasteners (cetyl alcohol)
- ISO 5855‑2, ISO 3353‑1, ISO 9152, EN 4016, EN 2424, EN 9100, EN 9133
Frequently Asked Questions
EN 4849:2022 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Screw, 100° countersunk normal head, Spiral Drive Recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature)/425 °C". This standard covers: This document specifies the characteristics of externally threaded fasteners, 100° countersunk normal head, Spiral Drive Recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated, for aerospace applications. Classification: 1 100 MPa /425 °C
This document specifies the characteristics of externally threaded fasteners, 100° countersunk normal head, Spiral Drive Recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated, for aerospace applications. Classification: 1 100 MPa /425 °C
EN 4849:2022 is classified under the following ICS (International Classification for Standards) categories: 49.030.20 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 4849:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2022
Aeronavtika - Vijak, 100° ugrezna glava, spiralna vdolbina, ozka toleranca, kratek
navoj, iz titanove zlitine, prevlečene z aluminijem IVD - Klasifikacija: 1100 MPa (pri
temperaturi okolice)/425 °C
Aerospace series - Screw, 100° countersunk normal head, Spiral Drive Recess, close
tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated -
Classification: 1 100 MPa (at ambient temperature)/425 °C
Luft- und Raumfahrt - 100° Senkschraube mit Spiral Antrieb, enge Schafttoleranz, kurzes
Gewinde, aus Titanlegierung, Aluminium IVD beschichtet - Klasse: 1 100 MPa (bei
Raumtemperatur)/425 °C
Série aérospatiale - Vis à tête fraisée normale 100°, empreinte en spirale, tige normale à
tolérance large, filetage court, en alliage de titane, revêtue d’aluminium IVD -
Classification : 1 100 MPa (à température ambiante)/425 °C
Ta slovenski standard je istoveten z: EN 4849:2022
ICS:
49.025.20 Aluminij Aluminium
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 4849
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2022
EUROPÄISCHE NORM
ICS 49.030.20
English Version
Aerospace series - Screw, 100° countersunk normal head,
Spiral Drive Recess, close tolerance normal shank, short
thread, in titanium alloy, aluminium IVD coated -
Classification: 1 100 MPa (at ambient temperature)/425
°C
Série aérospatiale - Vis à tête fraisée normale 100°, Luft- und Raumfahrt - 100° Senkschraube mit Spiral
empreinte en spirale, tige normale à tolérance large, Antrieb, enge Schafttoleranz, kurzes Gewinde, aus
filetage court, en alliage de titane, revêtue d'aluminium Titanlegierung, Aluminium IVD beschichtet - Klasse: 1
IVD - Classification : 1 100 MPa (à température 100 MPa (bei Raumtemperatur)/425 °C
ambiante)/425 °C
This European Standard was approved by CEN on 10 January 2022.
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, Republic of North Macedonia, 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4849:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements . 6
4.1 Configuration — Dimensions — Masses . 6
4.2 Tolerances of form and position . 10
4.3 Materials . 10
4.4 Surface treatment . 10
4.5 Lubrication . 10
5 Designation . 10
6 Marking . 10
7 Technical specification . 11
8 Oversize bolts . 11
Bibliography. 12
European foreword
This document (EN 4849:2022) 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 2022, and conflicting national standards shall
be withdrawn at the latest by September 2022.
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 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, Massachusetts 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 document specifie
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