General Information

Abstract

This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, close tolerance shank, short thread, in titanium alloy, aluminium IVD coated.
Classification: 1 100 MPa /425 °C .

Status
Not Published
Publication Date
18-Jan-2028
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 3/S 2 - Fasteners
Current Stage
4020 - Submission to enquiry - Enquiry
Start Date
23-Jul-2026
Completion Date
23-Jul-2026

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Overview

prEN 4072:2026 is a draft European standard developed by CEN for the aerospace industry. It specifies the characteristics and requirements for screws featuring a 100° countersunk normal head, offset cruciform recess, close tolerance shank, and short thread, manufactured in titanium alloy with an aluminium IVD coating. This standard ensures that fasteners used in aerospace structures offer high strength and corrosion resistance, suitable for critical environments. The screws are classified to withstand a minimum tensile strength of 1 100 MPa at ambient temperature and operating temperatures up to 425 °C, making them ideal for performance-critical applications.

This standard supersedes EN 4072:2016 and provides updated guidelines on specifications, designation, materials, and quality assurance for aerospace-grade screws.

Key Topics

  • Scope and Classification

    • Covers screws with 100° countersunk normal heads, offset cruciform recess, close tolerance shank, and short thread.
    • Applicable for fasteners made from titanium alloy and finished with aluminium IVD coating.
    • Classified for 1 100 MPa minimum tensile strength at room temperature, with temperature rating up to 425 °C.
  • Material and Coating

    • Titanium alloy offers high strength-to-weight ratio, corrosion resistance, and temperature stability.
    • Aluminium IVD (Ion Vapor Deposition) coating enhances corrosion protection, meeting aerospace environmental requirements.
  • Design and Tolerances

    • Dimensions and tolerances align with ISO 5856 and ISO 7913 for precision fit and consistent performance.
    • Offset cruciform recess ensures reliable drive engagement and efficient installation.
  • Identification and Marking

    • Fasteners are individually marked as per EN 2424 for traceability and standard compliance.
    • Designation system guides users to select correct configurations, considering diameter, length, head features, drive type, and lubrication.
  • Quality and Qualification

    • Manufacturers must meet strict quality management requirements (e.g., EN 9100).
    • Fasteners subject to robust qualification procedures for aerospace products (e.g., EN 9133).

Applications

  • Structural Fastening in Aircraft

    • Used in critical joints where high strength and low weight are essential.
    • Suitable for primary and secondary structures, including fuselage, wings, and control surfaces.
  • Aerospace Engines and Systems

    • High-temperature capability and corrosion resistance make these screws suitable for engine components and hot zones.
  • Satellite and Spacecraft

    • Titanium alloy and aluminium IVD coating provide longevity and reliability in harsh environments.
  • Defense and Military Aviation

    • Applicable in defense airframes and systems requiring compliance with stringent aerospace standards.

Related Standards

For comprehensive assurance of product quality and compatibility, prEN 4072 references and aligns with multiple international and European standards:

  • EN 2424: Marking of aerospace products
  • EN 4016: Oversized bolts for aerospace applications
  • EN 6118: Pure aluminium IVD coating for fasteners
  • ISO 5856: Screws with 100° countersunk heads-dimensions and mechanical properties
  • ISO 7913: Tolerances of form and position for aerospace bolts and screws
  • ISO 5855-2: MJ thread limit dimensions
  • ISO 9152: Procurement specification for titanium alloy bolts, strength class 1 100 MPa
  • ISO 14275 & ISO 14276: Drives, internal, offset cruciform
  • TR 3775: Aerospace bolts and pins - Materials
  • EN 9100: Quality management for aviation, space, and defense
  • EN 9133: Qualification procedure for aerospace standard products

By following prEN 4072 and these associated standards, organizations can achieve reliable, safe, and consistent fastener performance in demanding aerospace applications, ensuring compliance and quality across the supply chain.

Relations

Effective Date
11-Mar-2026
Effective Date
11-Mar-2026

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Frequently Asked Questions

prEN 4072 is a draft published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess, close tolerance 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 screws, 100° countersunk normal head, offset cruciform recess, close tolerance shank, short thread, in titanium alloy, aluminium IVD coated. Classification: 1 100 MPa /425 °C .

This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, close tolerance shank, short thread, in titanium alloy, aluminium IVD coated. Classification: 1 100 MPa /425 °C .

prEN 4072 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.

prEN 4072 has the following relationships with other standards: It is inter standard links to EN 4072:2016, EN 4072:2016/AC:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

prEN 4072 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-oktober-2026
Aeronavtika - Vijaki, 100° ugreznjena glava, križna zareza, polno steblo, 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, offset cruciform recess, close
tolerance shank, short thread in titanium alloy, aluminium IVD coated - Classification: 1
100 MPa (at ambient temperature)/425 °C
Luft- und Raumfahrt - 100° Senkschraube mit Flügelkreuzschlitz, kurzes Gewinde, aus
Titanlegierung, Aluminium IVD beschichtet - Klasse: 1 100 MPa (bei
Raumtemperatur)/425 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à empreinte cruciforme déportée, fût
à tolérance serrée, filetage court, en alliage de titane, revêtues aluminium IVD -
Classification : 1 100 MPa (à température ambiente)/425 °C
Ta slovenski standard je istoveten z: prEN 4072
ICS:
49.025.20 Aluminij Aluminium
49.025.30 Titan Titanium
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2026
ICS 49.030.20 Will supersede EN 4072:2016
English Version
Aerospace series - Screw, 100° countersunk normal head,
offset cruciform recess, close tolerance shank, short thread
in titanium alloy, aluminium IVD coated - Classification: 1
100 MPa (at ambient temperature)/425 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à Luft- und Raumfahrt - 100° Senkschraube mit
empreinte cruciforme déportée, fût à tolérance serrée, Flügelkreuzschlitz, kurzes Gewinde, aus
filetage court, en alliage de titane, revêtues aluminium Titanlegierung, Aluminium IVD beschichtet - Klasse: 1
IVD - Classification : 1 100 MPa (à température 100 MPa (bei Raumtemperatur)/425 °C
ambiente)/425 °C
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4072:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Required characteristics . 5
4.1 Configuration – Dimensions – Mass. 5
4.2 Tolerances of form and position . 5
4.3 Materials . 5
4.4 Surface treatment . 5
5 Designation . 9
6 Marking . 9
7 Technical specification . 9
7.1 General. 9
7.2 Approval of manufacturers . 10
7.3 Qualification of bolts. 10
8 Oversized bolts . 10
Bibliography . 11

European foreword
This document (prEN 4072:2026) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 4072:2016 + AC:2017.
EN 4072:2016 + AC:2017:
— Clause 3, “Terms and definitions”, added;
— Clause 7, “Technical specification”, editorially revised;
— Annex A, “Standard evolution form”, deleted.
1 Scope
This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform
recess, close tolerance shank, short thread, in titanium alloy, aluminium IVD coated.
1 2
Classification: 1 100 MPa /425 °C .
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 referenc
...