oSIST prEN 4509:2024
(Main)Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series - Classification: 1 100 MPa (at ambient temperature)/315 °C
Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series - Classification: 1 100 MPa (at ambient temperature)/315 °C
This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series.
Classification: 1 100 MPa /315 °C .
Luft- und Raumfahrt - 100° Senkschraube, mit Flügelkreuzschlitz, Gewinde annähernd bis Kopf, aus Titanlegierung, anodisiert, mit Aluminium pigmentierter Beschichtung, metrische Reihe - Klasse: 1 100 MPa (bei Raumtemperatur)/315 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à empreinte cruciforme déportée, filetées jusqu'à proximité de la tête, en alliage de titane, anodisées, avec revêtement alumino-organique, série métrique - Classification : 1 100 MPa (à température ambiante)/315 °C
Le présent document spécifie les caractéristiques des vis à tête fraisée 100° normale, à empreinte cruciforme déportée, filetées jusqu'à proximité de la tête, en alliage de titane, anodisées, avec revêtement alumino-organique, série métrique.
Classification : 1 100 MPa /315 °C.
Aeronavtika - Vijak, s 100° ugrezno glavo, križno zarezo, z navojem do glave, iz titanove zlitine, anodiziran, z aluminijevim pigmentiranim premazom, metrična serija - Klasifikacija: 1 100 MPa (pri temperaturi okolice)/315 °C
General Information
- Status
- Not Published
- Public Enquiry End Date
- 24-Dec-2024
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 05-Nov-2024
- Due Date
- 25-Mar-2025
- Completion Date
- 29-Dec-2024
Relations
- Effective Date
- 23-Apr-2024
Overview
prEN 4509 defines an aerospace fastener specification for a 100° countersunk screw with an offset cruciform recess, threaded to the head, made from a titanium alloy, anodized and finished with an aluminium‑pigmented coating (metric series). The standard assigns strength class 1 100 MPa (minimum tensile strength at ambient temperature) and a maximum temperature rating of 315 °C (coating‑limited). prEN 4509 is intended for aerospace applications where lightweight, corrosion‑resistant, high‑strength titanium screws are required.
Key topics and technical requirements
- Geometry and dimensions: Configuration, dimensions and masses are specified in Figure 1 and Table 1; all dimensions are in millimetres and apply after coating.
- Head and drive: 100° countersunk normal head with an offset cruciform recess; drive styles referenced to ISO 14275 (ribbed) and ISO 14276 (unribbed).
- Material and strength: Titanium alloy selection and strength classification follow TR 3775 (strength class 1 100 MPa).
- Surface treatments and coatings: Anodizing and aluminium‑pigmented coating requirements are per EN 4474. Lubrication with cetyl alcohol is specified per MIL‑L‑87132B.
- Surface finish: Specified surface roughness values: bearing surfaces (head bearing area, shank, thread) Ra max = 0.8 µm; all other surfaces Ra max = 3.2 µm. Sharp edges to be broken 0.1–0.4 mm.
- Tolerances and form: Tolerances of form and position according to ISO 7913; thread limits per ISO 5855‑2.
- Marking and designation: Marking requirements follow EN 2424; designation format and drive codes are defined in the standard.
- Procurement and qualification: Technical procurement specification aligns with ISO 9152; manufacturer approval and production quality must comply with aerospace quality systems (e.g., EN 9100). Qualification procedures (e.g., EN 9133) apply for aerospace standard products.
Applications and who uses it
- Aerospace OEMs and integrators specifying fasteners for airframe, interior and secondary structural assemblies where high strength-to-weight and corrosion resistance are critical.
- Fastener manufacturers, metallurgists and coatings suppliers producing titanium countersunk screws to aerospace tolerances and finishes.
- Procurement, quality and inspection teams verifying conformity, marking and traceability for aerospace contracts.
- Design and stress engineers selecting fasteners compatible with titanium mating materials and specified temperature limits.
Related standards
- EN 2424 (marking), EN 4474 (aluminium pigmented coatings), ISO 5855‑2 (threads), ISO 7913 (tolerances), ISO 9152 (procurement spec), ISO 14275 / ISO 14276 (drives), MIL‑L‑87132B (lubricant), TR 3775 (materials), EN 9100 / EN 9133 (quality & qualification).
prEN 4509 is a targeted aerospace fastener specification for designers and manufacturers needing a certified, corrosion‑resistant titanium countersunk screw with offset cruciform drive and defined mechanical and coating performance.
Frequently Asked Questions
oSIST prEN 4509:2024 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, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series - Classification: 1 100 MPa (at ambient temperature)/315 °C". This standard covers: This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series. Classification: 1 100 MPa /315 °C .
This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series. Classification: 1 100 MPa /315 °C .
oSIST prEN 4509:2024 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 4509:2024 has the following relationships with other standards: It is inter standard links to SIST EN 4509:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
oSIST prEN 4509:2024 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-december-2024
Aeronavtika - Vijak, s 100° ugrezno glavo, križno zarezo, z navojem do glave, iz
titanove zlitine, anodiziran, z aluminijevim pigmentiranim premazom, metrična
serija - Klasifikacija: 1 100 MPa (pri temperaturi okolice)/315 °C
Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess,
threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric
series - Classification: 1 100 MPa (at ambient temperature)/315 °C
Luft- und Raumfahrt - 100° Senkschraube, mit Flügelkreuzschlitz, Gewinde annähernd
bis Kopf, aus Titanlegierung, anodisiert, mit Aluminium pigmentierter Beschichtung,
metrische Reihe - Klasse: 1 100 MPa (bei Raumtemperatur)/315 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à empreinte cruciforme déportée,
filetées jusqu'à proximité de la tête, en alliage de titane, anodisées, avec revêtement
alumino-organique, série métrique - Classification : 1 100 MPa (à température
ambiante)/315 °C
Ta slovenski standard je istoveten z: prEN 4509
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
October 2024
ICS 49.030.20 Will supersede EN 4509:2006
English Version
Aerospace series - Screw, 100° countersunk normal head,
offset cruciform recess, threaded to head, in titanium alloy,
anodized, with aluminium pigmented coating, metric
series - Classification: 1 100 MPa (at ambient
temperature)/315 °C
Série aérospatiale - Vis à tête fraisée 100° normale, à Luft- und Raumfahrt - 100° Senkschraube, mit
empreinte cruciforme déportée, filetées jusqu'à Flügelkreuzschlitz, Gewinde annähernd bis Kopf, aus
proximité de la tête, en alliage de titane, anodisées, Titanlegierung, anodisiert, mit Aluminium
avec revêtement alumino-organique, série métrique - pigmentierter Beschichtung, metrische Reihe - Klasse:
Classification : 1 100 MPa (à température 1 100 MPa (bei Raumtemperatur)/315 °C
ambiante)/315 °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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4509:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
4.1 Configuration – Dimensions – Masses . 4
4.2 Tolerances of form and position . 5
4.3 Materials . 5
4.4 Surface treatments . 5
5 Designation . 8
6 Marking . 8
7 Technical specification . 8
European foreword
This document (prEN 4509:2024) 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 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 4509:2006.
...
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