oSIST prEN 4162:2024

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

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 .

Luft- und Raumfahrt - 100°-Senkschraube mit Flügelkreuzschlitz, mittlere Gewindelänge, aus legiertem Stahl, verkadmet - Klasse: 1 100 MPa (bei Raumtemperatur)/235 °C

Dieses Dokument legt die Eigenschaften von 100°-Senkschrauben mit Flügelkreuzschlitz und mittlerer Gewin
delänge, aus legiertem Stahl, verkadmet, fest.
Klasse: 1100MPa 1/235°C2

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

Le présent document spécifie les caractéristiques des vis à tête fraisée 100° normale, à empreinte cruciforme déportée, tige normale à tolérance large, filetage moyen, en acier allié, cadmiées.
Classification : 1 100 MPa /235 °C.

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

General Information

• Status: Not Published
• Public Enquiry End Date: 26-Nov-2024
• ICS: 49.025.10 - Steels
• ICS: 49.030.20 - Bolts, screws, studs
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 18-Sep-2024
• Due Date: 05-Feb-2025
• Completion Date: 27-Nov-2024
• Ref Project: FprEN 4162 - 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

Relations

• Revises: SIST 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: SIST 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

oSIST prEN 4162:2024 is a draft European Standard from CEN, defining the requirements for screws used in aerospace applications. Specifically, it covers screws with a 100° countersunk normal head, an offset cruciform recess, a coarse tolerance normal shank, and medium-length thread. Made from alloy steel and cadmium plated, these screws are classified for use at a tensile strength of 1,100 MPa (at ambient temperature) and up to 235 °C. The standard addresses product characteristics, surface treatments, marking, conformity, and quality assurance relevant for aerospace manufacturing and maintenance.

This standard supersedes EN 4162:2016, integrating updates in technical definitions, surface treatments, and drive codes, ensuring alignment with the latest industry best practices for aerospace fasteners.

Key Topics

• Product Characteristics

  • 100° countersunk head
  • Offset cruciform recess (provides enhanced torque transfer)
  • Coarse tolerance normal shank
  • Medium thread length (according to ISO 5856 and ISO 5855-2 standards)
  • Alloy steel construction, cadmium-plated surface for corrosion resistance

• Mechanical Classification

  • Minimum tensile strength: 1,100 MPa at ambient temperature
  • Maximum permissible operating temperature: 235 °C

• Surface Treatments

  • Multiple cadmium plating options in accordance with EN 2133:2020, including chromate conversion and chromium (VI)-free passivation for improved environmental and health compliance

• Designation and Marking

  • Clear, standardized designation system based on diameter, length, hole and drive codes per the referenced tables
  • Permanent marking to EN 2424 for traceability

• Manufacturing and Quality Management

  • Manufacturer must have an approved quality management system (e.g., EN 9100)
  • Product qualification per aerospace standards (e.g., EN 9133)

Applications

oSIST prEN 4162:2024 screws are essential components in a wide range of aerospace assemblies where high mechanical strength and reliable fastening are critical. Common uses include:

• Aircraft structural joints
• Fuselage and wing assemblies
• Avionics mounting
• Aerospace component manufacturing and repairs
• Screws specified for use in environments requiring high tensile strength and resistance to moderate thermal exposure

Thanks to their defined material and plating, these fasteners offer dependable performance in demanding environments, ensuring longevity and resistance to corrosion.

Related Standards

Several key standards provide complementary guidance and technical references for the screws described in oSIST prEN 4162:2024:

• EN 2133: Cadmium plating of steels with specified tensile strengths
• EN 2137: Alloy steel bar specifications for aerospace bolts
• EN 2424: Marking of aerospace products
• EN 3514: Hardened and tempered alloy steel for bolts
• ISO 3353-1: Lead and runout threads for rolled external threads
• ISO 4520: Chromate conversion coatings
• ISO 5855-2 / ISO 5856: Dimensions and requirements for MJ threads and internal cruciform drives
• ISO 7689: Procurement specification for alloy steel bolts, strength class 1,100 MPa
• ISO 14275 / ISO 14276: Internal offset cruciform drive details
• EN 9100: Quality management systems for aviation, space, and defence
• EN 9133: Qualification procedures for aerospace standard products

Practical Value

By specifying the required properties and quality management processes, oSIST prEN 4162:2024 ensures the safe, reliable selection and use of high-strength cadmium-plated screws in aerospace design and maintenance. Following this standard helps companies comply with regulatory and customer requirements, reducing risk and supporting interoperability across international supply chains.

Standards Content (Sample)

SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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.

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

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.
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
...