SIST EN 3636:2008
(Main)Aerospace series - Screws, reduced pan head, offset cruciform recess, relieved shank, long thread, in heat resisting steel FE-PA92HT (A286), silver plated - Classification: 900 MPa/650 °C
Aerospace series - Screws, reduced pan head, offset cruciform recess, relieved shank, long thread, in heat resisting steel FE-PA92HT (A286), silver plated - Classification: 900 MPa/650 °C
This standard specifies the requirements for offset cruciform recess pan head screws with relieved shank and long thread in heat resisting steel FE-PA92HT, silver plated, tensile strength class 900 MPa at room temperature. The maximum test temperature of the material is 650 °C.
Luft- und Raumfahrt - Flachkopfschrauben mit geripptem Flügelkreuzschlitz, Dünnschaft, langes Gewinde, aus hochwarmfestem Stahl FE-PA92HT (A286), versilbert - Klasse: 900 MPa/650 °C
Diese Norm legt die Anforderungen an Flachkopfschrauben mit Flügelkreuzschlitz, Dünnschaft und langem Gewinde aus hochwarmfestem Stahl FE PA92HT, versilbert, in der Zugfestigkeitsklasse 900 MPa bei Raumtemperatur fest. Die maximale Prüftemperatur des Werkstoffes beträgt 650 °C.
Série aérospatiale - Vis à tête cylindrique, réduite, à empreinte cruciforme déportée, à tige réduite, à filetage long, en acier résistant à chaud FE-PA92HT (A286), argentées - Classification: 900 MPa/650 °C
Aeronavtika - Vijaki, nizka valjasta glava, križna zareza, dolgi navoj do glave, iz toplotnoodpornega jekla FE-PA92HT (A286), posrebreni - Klasifikacija: 900 MPa/650 °C
General Information
- Status
- Published
- Publication Date
- 18-May-2008
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 09-May-2008
- Due Date
- 14-Jul-2008
- Completion Date
- 19-May-2008
Relations
- Effective Date
- 23-Oct-2024
Overview
EN 3636:2008 is a CEN (ASD‑STAN) aerospace standard that specifies requirements for a family of high‑performance screws: reduced pan head, offset cruciform recess, relieved shank, long thread, manufactured in heat‑resisting steel FE‑PA92HT (A286) and silver plated. It classifies these fasteners as tensile strength 900 MPa at room temperature with a maximum test temperature of 650 °C. The document covers configuration, dimensions, material reference, surface coating and marking rules for use in aerospace applications.
Key Topics and Requirements
- Configuration and dimensions: Head, recess and thread geometry, with dimensions and tolerances referenced in the standard’s figures and Tables 1–2 (metric, millimetres). Thread manufacturing methods reference ISO standards (e.g., ISO 3353‑1 for rolled threads).
- Material: Heat‑resisting steel FE‑PA92HT (A286), as referenced to EN 2398 or EN 2399 for bar/forged bolt materials.
- Mechanical classification: Tensile strength class 900 MPa at room temperature; material test temperature up to 650 °C.
- Surface coating: Electrolytic silver plating in accordance with EN 2786; coating thickness specified 3 µm to 6 µm on thread flanks (measured at pitch diameter).
- Drive and recess: Offset cruciform internal drive per ISO 14275 / ISO 14277 series; recess gauges per ISO 14278.
- Designation & marking: Example designation format: “SCREW REDUCED PAN EN 3636‑030‑010”; marking styles and positions follow EN 2424. Diameter codes determine marking style (e.g., 030–040 = style F).
- Normative references: Integrates multiple aerospace and fastener standards (ISO and EN series) which must be used together for full specification and inspection.
Applications and Users
- Primary use: High‑temperature, high‑strength aerospace assemblies where a compact pan head and offset cruciform drive are required (engines, hot‑section components, structural subassemblies).
- Who uses it:
- Aerospace fastener manufacturers for production and quality control.
- Design and stress engineers selecting fasteners for elevated temperature service.
- Procurement, inspection and maintenance teams ensuring parts meet aerospace material, coating and marking requirements.
- Certification bodies verifying conformity with CEN/ASD‑STAN standards.
Related Standards
Relevant cross‑references included in EN 3636:2008:
- EN 2398 / EN 2399 (FE‑PA materials)
- EN 2786 (electrolytic silver plating)
- EN 3043 (technical specification for FE‑PA92HT externally threaded fasteners)
- ISO 3353‑1, ISO 5855‑1/2, ISO 14275 / 14277 / 14278 (threading, drives, gauges)
- EN 2424 (marking of aerospace products)
This standard is essential for specifying and procuring EN 3636:2008 aerospace screws, ensuring consistent geometry, material performance (900 MPa / 650 °C) and silver‑plated finish for critical aerospace applications.
Frequently Asked Questions
SIST EN 3636:2008 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Screws, reduced pan head, offset cruciform recess, relieved shank, long thread, in heat resisting steel FE-PA92HT (A286), silver plated - Classification: 900 MPa/650 °C". This standard covers: This standard specifies the requirements for offset cruciform recess pan head screws with relieved shank and long thread in heat resisting steel FE-PA92HT, silver plated, tensile strength class 900 MPa at room temperature. The maximum test temperature of the material is 650 °C.
This standard specifies the requirements for offset cruciform recess pan head screws with relieved shank and long thread in heat resisting steel FE-PA92HT, silver plated, tensile strength class 900 MPa at room temperature. The maximum test temperature of the material is 650 °C.
SIST EN 3636:2008 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.
SIST EN 3636:2008 has the following relationships with other standards: It is inter standard links to oSIST prEN 3636:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 3636:2008 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-julij-2008
Aeronavtika - Vijaki, nizka valjasta glava, križna zareza, dolgi navoj do glave, iz
toplotnoodpornega jekla FE-PA92HT (A286), posrebreni - Klasifikacija: 900
MPa/650 °C
Aerospace series - Screws, reduced pan head, offset cruciform recess, relieved shank,
long thread, in heat resisting steel FE-PA92HT (A286), silver plated - Classification: 900
MPa/650 °C
Luft- und Raumfahrt - Flachkopfschrauben mit geripptem Flügelkreuzschlitz, Dünnschaft,
langes Gewinde, aus hochwarmfestem Stahl FE-PA92HT (A286), versilbert - Klasse:
900 MPa/650 °C
Série aérospatiale - Vis à tête cylindrique, réduite, à empreinte cruciforme déportée, à
tige réduite, à filetage long, en acier résistant à chaud FE-PA92HT (A286), argentées -
Classification: 900 MPa/650 °C
Ta slovenski standard je istoveten z: EN 3636:2008
ICS:
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 3636
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2008
ICS 49.030.20
English Version
Aerospace series - Screws, reduced pan head, offset cruciform
recess, relieved shank, long thread, in heat resisting steel FE-
PA92HT (A286), silver plated - Classification: 900 MPa/650 °C
Série aérospatiale - Vis à tête cylindrique, réduite, à Luft- und Raumfahrt - Flachkopfschrauben mit geripptem
empreinte cruciforme déportée, à tige réduite, à filetage Flügelkreuzschlitz, Dünnschaft, langes Gewinde, aus
long, en acier résistant à chaud FE-PA92HT (A286), hochwarmfestem Stahl FE-PA92HT (A286), versilbert -
argentées - Classification: 900 MPa/650 °C Klasse: 900 MPa/650 °C
This European Standard was approved by CEN on 21 December 2007.
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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3636:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Required characteristics.4
4 Designation .7
5 Marking .7
6 Technical specification .7
Foreword
This document (EN 3636:2008) 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 Standard 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 European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2008, and conflicting national standards shall be withdrawn at
the latest by October 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
...
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