EN 3052:2009

Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in heat and corrosion resisting steel, passivated - Classification: 1 100 MPa (at ambient temperature) / 425 °C

This standard specifies the characteristics of bolts, normal hexagonal head, close tolerance normal shank, short thread, in heat and corrosion resisting steel, passivated.
Classification: 1 100 MPa  ) / 425 °C  )

Luft- und Raumfahrt - Sechskant-Paßschrauben, kurzes Gewinde, aus korrosionsbeständigem und hochwarmfestem Stahl, passiviert - Klasse: 1 100 MPa (bei Raumtemperatur) / 425 °C

Diese Norm legt die Eigenschaften von Sechskant-Passschrauben mit kurzem Gewinde, aus
korrosionsbeständigem und hochwarmfestem Stahl, passiviert, fest.
Klasse: 1 100 MPa1)/425 °C2)

Série aérospatiale - Vis à tête hexagonale normale, fût normal à tolérance serrée, filetage court, en acier résistant à chaud et à la corrosion, passivées - Classification: 1 100 MPa (à température ambiante) / 425 °C

Aeronavtika - Sorniki, normalna šestroba glava, ozka toleranca, kratek navoj, iz toplotno in korozijsko odpornega jekla, pasivirani - Klasifikacija: 1100 MPa (pri temperaturi okolice)/425 °C

General Information

• Status: Published
• Publication Date: 21-Jul-2009
• Withdrawal Date: 30-Jan-2010
• ICS: 49.030.20 - Bolts, screws, studs
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3 - Mechanical
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 21-Jan-2025
• Completion Date: 14-May-2025
• Ref Project: SIST EN 3052:2009 - Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in heat and corrosion resisting steel, passivated - Classification: 1100 MPa (at ambient temperature)/425 °C

Relations

• Replaces: EN 3052:1993 - Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in heat and corrosion resisting steel, passivated - Classification: 1 100 MPa (at ambient temperature / 425° C (includes amendment A1:1993)
• Effective Date: 11-Mar-2009

Overview

EN 3052:2009 is a European standard developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) under the authority of CEN. It specifies the characteristics of aerospace bolts with normal hexagonal heads, close tolerance normal shanks, and short threads. These bolts are made from heat and corrosion resisting steel and are passivated to enhance durability and resistance in demanding applications. The standard classifies these bolts to withstand a minimum tensile strength of 1100 MPa at ambient temperature and maintain functional integrity up to 425 °C.

This specification is essential for the aerospace industry, ensuring consistent quality and performance of bolting components used in aircraft manufacturing, maintenance, and other high-temperature environments.

Key Topics

• Bolt Configuration and Dimensions:
  EN 3052:2009 defines precise bolt dimensions and tolerances in line with ISO 3193, including shank diameter, head size, thread length, and other geometric characteristics. Dimensions comply with aerospace industry requirements to ensure interchangeability and secure fittings.

• Material Requirements:
  The standard mandates the use of heat and corrosion resistant steel with a strength class of 1100 MPa, with passivation treatment as outlined in EN 2516 to improve corrosion resistance especially in aerospace environments.

• Strength and Temperature Classification:
  Bolts covered by this standard must have a tensile strength of at least 1100 MPa at ambient temperature and be capable of withstanding temperatures up to 425 °C without deterioration of properties.

• Tolerances and Precision:
  Form and positional tolerances follow ISO 7913 to maintain close control over bolt geometry, critical for aerospace applications where precise fittings are mandatory.

• Marking and Identification:
  Bolts are marked following EN 2424 to ensure traceability and facilitate quality control. A standardized designation system including bolt diameter, length, and locking features is provided for consistent identification.

• Oversized Bolts:
  For applications requiring special oversized bolts, EN 4016 provides complementary specifications referenced within EN 3052:2009.

Applications

• Aerospace Manufacturing and Assembly:
  EN 3052 bolts are used extensively in aircraft structural components where high strength, thermal stability, and corrosion resistance are critical.

• High-Temperature Environments:
  Suitable for engine assemblies and other aerospace systems exposed to elevated temperatures (up to 425 °C).

• Corrosion Critical Components:
  The passivation process enhances bolt lifespan in corrosive or moist operational environments, reducing maintenance frequency.

• Replacement and Maintenance:
  The standard ensures that aerospace maintenance teams can replace bolts with components that meet stringent safety and performance criteria.

• Quality Controlled Production:
  Adherence to aerospace quality management systems such as EN 9100 and EN 9133 ensures reliability in production and procurement of these bolts.

Related Standards

• ISO 3193: Dimensions and threads for aerospace bolts.
• ISO 3353-1: Specifications for lead and runout threads on rolled external threads.
• ISO 5855-2: Limit dimensions for aerospace bolts and nuts.
• ISO 7913: Tolerances of form and position of metric aerospace bolts and screws.
• EN 2516: Passivation methods for corrosion-resistant steels.
• EN 4016: Specification for oversized aerospace bolts.
• EN 2424: Marking requirements for aerospace products.
• EN 9100: Quality management systems for aerospace organizations.
• EN 9133: Qualification procedures for aerospace standard parts.
• TR 3775: Material specifications for aerospace bolts and pins.
• ISO 8168: Procurement specifications for high-strength heat and corrosion resistant steel bolts.

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This comprehensive standard EN 3052:2009 plays a critical role in maintaining safety, reliability, and performance within the aerospace sector by setting exacting requirements for high-strength, corrosion-resistant hex bolts suited for demanding aerospace environments. Compliance ensures interoperability, durability, and long-term safety of aerospace assemblies.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2009
1DGRPHãþD
SIST EN 3052:2001
Aeronavtika - Sorniki, normalna šestroba glava, ozka toleranca, kratek navoj, iz
toplotno in korozijsko odpornega jekla, pasivirani - Klasifikacija: 1100 MPa (pri
temperaturi okolice)/425 °C
Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short
thread, in heat and corrosion resisting steel, passivated - Classification: 1100 MPa (at
ambient temperature)/425 °C
Luft- und Raumfahrt - Sechskant-Paßschrauben, kurzes Gewinde, aus
korrosionsbeständigem und hochwarmfestem Stahl, passiviert - Klasse: 1100 MPa (bei
Raumtemperatur)/425 °C
Série aérospatiale - Vis à tête hexagonale normale, fût normal à tolérance serrée,
filetage court, en acier résistant à chaud et à la corrosion, passivées - Classification:
1100 MPa (à température ambiante)/425 °C
Ta slovenski standard je istoveten z: EN 3052:2009
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 3052
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2009
ICS 49.030.20 Supersedes EN 3052:1993
English Version
Aerospace series - Bolts, normal hexagonal head, close
tolerance normal shank, short thread, in heat and corrosion
resisting steel, passivated - Classification: 1 100 MPa (at
ambient temperature) / 425 °C
Série aérospatiale - Vis à tête hexagonale normale, fût Luft- und Raumfahrt - Sechskant-Paßschrauben, kurzes
normal à tolérance serrée, filetage court, en acier résistant Gewinde, aus korrosionsbeständigem und
à chaud et à la corrosion, passivées - Classification: 1 100 hochwarmfestem Stahl, passiviert - Klasse: 1 100 MPa (bei
MPa (à température ambiante) / 425 °C Raumtemperatur) / 425 °C
This European Standard was approved by CEN on 13 June 2009.

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: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3052:2009: 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
7 Oversized bolts . 7

Foreword
This document (EN 3052:2009) 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 January 2010, and conflicting national standards shall be withdrawn
at the latest by January 2010.
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.
This document supersedes EN 3052:1993.
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, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
...