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
Public Enquiry End Date
09-Oct-2026
Technical Committee
I13 - Imaginarni 13
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
12-Aug-2026
Due Date
30-Dec-2026

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oSIST prEN 4072:2026

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Overview

oSIST prEN 4072:2026 specifies the requirements for aerospace screws featuring a 100° countersunk normal head, offset cruciform recess, close tolerance shank, and short thread. These screws are manufactured from titanium alloy and coated with aluminium using Ion Vapor Deposition (IVD) method. The standard classifies the screws at 1 100 MPa tensile strength (at ambient temperature) and ensures resistance up to 425°C. This document, developed by SIST and ASD-STAN, supersedes the previous EN 4072:2016 + AC:2017 standard and aligns with current aerospace industry requirements for high-strength, temperature-resistant fasteners.

Key Topics

  • Product Characteristics:

    • 100° countersunk normal head for flush fitting in assemblies
    • Offset cruciform internal recess for improved drive engagement
    • Close tolerance shank and short thread for precise fit and reduced weight
    • Titanium alloy material provides high strength-to-weight ratio and excellent corrosion resistance
    • Aluminium IVD coating offers enhanced surface protection, especially in demanding aerospace environments
  • Mechanical and Thermal Classification:

    • Minimum tensile strength: 1 100 MPa at ambient temperature
    • Maximum operational temperature: 425°C without loss of original characteristics
  • Surface Treatment:

    • Aluminium IVD coating in accordance with EN 6118 or MIL-DTL-83488
    • Optional cetyl alcohol lubrication per EN 6117
  • Certification and Quality:

    • Manufacturer approval and quality management in line with EN 9100
    • Qualification procedures as outlined in EN 9133

Applications

Aerospace screws described in oSIST prEN 4072:2026 are widely used throughout the aerospace and aviation industry, where precision, durability, and resistance to extreme conditions are essential. Practical applications include:

  • Aircraft Assembly:
    Used in structural and skin joints where flush surfaces and high strength are required

  • Aerospace Equipment and Components:
    Suitable for installing engine components, access panels, control systems, and other critical assemblies

  • Military and Defense:
    Applied in specialized aerospace and defense systems requiring compliance with stringent strength and temperature specifications

  • Spacecraft Construction:
    Appropriate for non-corrosive and lightweight fastener solutions in satellite and space vehicle design

These screws are specifically selected for applications requiring close tolerance fittings, high load capacity, and superior performance at elevated temperatures.

Related Standards

To ensure compatibility, performance, and regulatory compliance, oSIST prEN 4072:2026 references several international standards, including:

  • EN 2424: Marking of aerospace products
  • EN 4016: Oversized bolts for aerospace applications
  • EN 6118: Pure aluminium IVD coating for fasteners
  • EN 9100: Quality management systems for aviation, space, and defence
  • EN 9133: Qualification of aerospace standard products
  • EN 6117: Specification for lubrication with cetyl alcohol
  • ISO 5855-2: Dimensions for aerospace bolts and nuts (MJ threads)
  • ISO 5856: Screws with 100° normal countersunk head
  • ISO 7913: Tolerances of form and position for bolts and screws
  • ISO 9152: Procurement specification for titanium alloy bolts and screws
  • ISO 14275 / ISO 14276: Drives, internal, offset cruciform (ribbed and unribbed)
  • TR 3775: Aerospace bolts and pins - Materials
  • MIL-DTL-83488: High purity aluminium coating

These references ensure that screws produced under this standard meet global aerospace requirements for safety, durability, and compatibility across international projects.


Keywords: oSIST prEN 4072:2026, aerospace screws, 100° countersunk head, offset cruciform recess, titanium alloy screw, aluminium IVD coating, close tolerance shank, short thread, high strength aerospace fasteners, EN 4072, aviation fasteners, European standard, aerospace component standards.

Relations

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

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oSIST prEN 4072:2026

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Frequently Asked Questions

oSIST prEN 4072:2026 is a draft published by the Slovenian Institute for Standardization (SIST). 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 .

oSIST prEN 4072:2026 is classified under the following ICS (International Classification for Standards) categories: 49.025.20 - Aluminium; 49.025.30 - Titanium; 49.030.20 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.

oSIST prEN 4072:2026 has the following relationships with other standards: It is inter standard links to SIST EN 4072:2016, SIST EN 4072:2016/AC:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

oSIST prEN 4072:2026 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
...