EN 4162:2026

• Abstract:

  This document specifies the characteristics of bolts, 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated.; Classification: 1 100 MPa /235 °C .

• Status: Published
• Publication Date: 01-Sep-2026
• ICS: 49.030.20 - Bolts, screws, studs
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3/S 2 - Fasteners
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 02-Sep-2026
• Completion Date: 02-Sep-2026
• Ref Project: kSIST FprEN 4162:2026 - Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature)/235 °C

• Revises: EN 4162:2016 - Aerospace series - Screws 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature) / 235 °C
• Effective Date: 05-Jun-2024
• Revises: EN 4162:2016/AC:2017 - Aerospace series - Screws 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature) / 235 °C
• Effective Date: 05-Jun-2024

Overview

EN 4162:2026 is a European standard developed by CEN for aerospace applications, specifying the requirements for screws with a 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, and medium-length thread. These screws are made from alloy steel and are cadmium plated, designed for a tensile strength classification of 1,100 MPa at ambient temperature and maximum usage up to 235 °C. The document replaces the previous EN 4162:2016, introducing updated terminology, surface treatment guidelines, and drive code references.

This standard ensures high performance and reliability of fasteners installed in demanding avionics, structural, and mechanical environments typical in the aerospace industry.

Key Topics

• Product Features:

  • 100° countersunk head for flush installation in assemblies
  • Offset cruciform recess for improved torque transmission and reduced cam-out
  • Coarse tolerance normal shank and medium thread length for versatile application
  • Constructed from alloy steel, classified as 1,100 MPa tensile strength
  • Cadmium plated for enhanced corrosion resistance and durability

• Surface Treatments:

  • Cadmium plating thickness of 8–14 µm on exposed surfaces
  • Surface finish options including chromate conversion, black chromate, and hexavalent chromium-free passivation
  • Preference for environmentally safer, non-chromium (VI) treatments where available

• Dimensional and Mechanical Compliance:

  • Dimensions and tolerances conforming to ISO 5856 and ISO 7913
  • Marking requirements as per EN 2424 for traceability
  • Material compliance with EN 2137 and EN 3514 or the technical report TR 3775

• Quality Assurance:

  • Manufacturers required to operate under approved quality management systems, such as EN 9100
  • Product qualification per EN 9133, demonstrating consistent quality and compliance

Applications

• Aerospace and Aviation:
  EN 4162:2026 screws are engineered primarily for aircraft structure, avionics panels, and high-performance aerospace assemblies, ensuring safe and secure fastening solutions across the sector.

• High-Reliability Environments:
  Their high tensile strength, precise manufacturing tolerances, and corrosion-resistant surface treatment make them suitable for use in environments where strength, vibration resistance, and minimal maintenance are critical.

• International Manufacturing and Procurement:
  Adherence to EN 4162 in procurement ensures compatibility, interchangeability, and reliability across supply chains focused on aerospace components, supporting compliance with international aerospace fastener quality requirements.

Related Standards

• EN 2133:
  Aerospace series - Cadmium plating of steels with specified tensile strength; defines plating procedures referenced in EN 4162.

• EN 2424:
  Marking of aerospace products; specifies product marking for traceability.

• ISO 5856 & ISO 5855-2:
  Detail thread profiles, head types, and tolerance requirements for aerospace screws.

• EN 9100:
  Quality Management Systems for Aviation, Space, and Defence; required for approved manufacturers.

• EN 9133:
  Qualification procedure for aerospace standard products.

By strictly following EN 4162:2026, manufacturers and users of aerospace fasteners benefit from elevated standards of safety, performance, and interchangeability, supporting efficient global aerospace and aviation operations.

SLOVENSKI STANDARD
oSIST prEN 4162:2024
01-november-2024
Aeronavtika - Vijak, 100° ugrezna glava, križna zareza, polno steblo, ozka
toleranca, srednja navojna dolžina, iz legiranega jekla, prevlečeni s kadmijem -
Klasifikacija: 1100 MPa (pri temperaturi okolice)/235 °C
Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess,
coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated -
Classification: 1 100 MPa (at ambient temperature)/235 °C
Luft- und Raumfahrt - 100°-Senkschraube mit Flügelkreuzschlitz, mittlere Gewindelänge,
aus legiertem Stahl, verkadmet - Klasse: 1 100 MPa (bei Raumtemperatur)/235 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à empreinte cruciforme déportée,
tige normale à tolérance large, filetage moyen, en acier allié, cadmiée - Classification : 1
100 MPa (à température ambiante)/235 °C
Ta slovenski standard je istoveten z: prEN 4162
ICS:
49.025.10 Jekla Steels
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
oSIST prEN 4162:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 4162:2024
oSIST prEN 4162:2024
DRAFT
EUROPEAN STANDARD
prEN 4162
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2024
ICS 49.030.20 Will supersede EN 4162:2016
English Version
Aerospace series - Screw, 100° countersunk normal head,
offset cruciform recess, coarse tolerance normal shank,
medium length thread, in alloy steel, cadmium plated -
Classification: 1 100 MPa (at ambient
temperature)/235 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à Luft- und Raumfahrt - 100°-Senkschraube mit
empreinte cruciforme déportée, tige normale à Flügelkreuzschlitz, mittlere Gewindelänge, aus
tolérance large, filetage moyen, en acier allié, cadmiées legiertem Stahl, verkadmet - Klasse: 1 100 MPa (bei
- Classification: 1 100 MPa (à température Raumtemperatur)/235 °C
ambiante)/235 °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 NORMALISATIO N

E UROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4162:2024 E
worldwide for CEN national Members.

oSIST prEN 4162:2024
prEN 4162:2024 (E)
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 — Masses . 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 screws . 10
Bibliography . 11

oSIST prEN 4162:2024
prEN 4162:2024 (E)
European foreword
This document (prEN 4162:2024) 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, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 4162:2016.
This document includes the following significant technical changes with respect to EN 4162:2016:
— Clause 3 „Terms and definitions“ added;
— update of 4.3 „Surface treatment“;
— Table 3 has been updated with new drive code references.
oSIST prEN 4162:2024
prEN 4162:2024 (E)
1 Scope
This document specifies the characteristics of bolts, 100° countersunk normal head, offset cruciform
recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated.
1 2
Classification: 1 100 MPa /235 °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 referenced document (including any amendments) applies.
EN 2133:2020, Aerospace series — Cadmium plating of steels with specified
...