Aerospace series - Headless threaded plugs, cross recess, in aluminium alloy 5086

This standard specifies characteristics of headless threaded plugs, cross recess, in aluminium alloy 5086, for
aerospace purpose.

Luft- und Raumfahrt - Verschlussschraube ohne Kopf mit Kreuzschlitz, aus Aluminiumlegierung 5086

Diese Norm legt die Merkmale von Verschlussschrauben ohne Kopf mit Kreuzschlitz, aus Aluminiumlegierung 5086, für die Luft- und Raumfahrt fest.

Série aérospatiale - Bouchons filetés, sans tête, empreinte cruciforme, en alliage d'aluminium 5086

Aeronavtika - Brezglava navojna zapirala s križno zarezo iz aluminijeve zlitine 5086

Ta evropski standard določa lastnosti brezglavih navojnih zapiral s križno zarezo iz aluminijeve zlitine 5086 za uporabo v aeronavtiki.

General Information

Status
Published
Publication Date
13-Mar-2012
Withdrawal Date
29-Sep-2012
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
30-Jun-2017
Completion Date
14-Apr-2025
Ref Project
SIST EN 3706:2012 - Aerospace series - Headless threaded plugs, cross recess, in aluminium alloy 5086

Overview

EN 3706:2012 is a European standard developed by CEN and ASD-STAN, specifying the characteristics of headless threaded plugs with a cross recess made from aluminium alloy 5086 for aerospace applications. This standard governs the design, dimensions, material properties, and marking of these specialized plugs-critical components in aerospace engineering where reliability, precision, and material performance are paramount.

The plugs described in EN 3706:2012 are used as sealing elements or closure components without heads, enabling compact and secure fastening solutions in aerospace structures. Their aluminium alloy 5086 composition ensures corrosion resistance, strength, and lightweight properties, meeting the demanding requirements of aerospace environments.

Key Topics

  • Configuration and Dimensions: EN 3706:2012 defines precise dimensional criteria and tolerances for headless threaded plugs, with diameter codes ranging from MJ6×1.00 to MJ20×1.00. Dimensions include plug length, thread size, recess size, and other critical parameters ensuring interchangeability and fit.
  • Material Specifications: The standard mandates the use of aluminium alloy 5086, complying with EN 2699, which covers annealed and straightened bars with specific mechanical characteristics suitable for aerospace components.
  • Thread Standards: The plugs follow ISO 5855-1 for metric threads and conform to ISO 965-3 tolerance classes for screw threads, guaranteeing compatibility with aerospace assembly requirements.
  • Marking Requirements: Marking of plugs follows EN 2424 category G, ensuring traceability and compliance with aerospace marking protocols.
  • Installation Holes: Reference to EN 3707 specifies details for installation holes, aligning with aerospace mounting requirements.

Applications

EN 3706:2012 headless threaded plugs are essential in aerospace manufacturing and maintenance for:

  • Sealing and Closure: Used to close off threaded holes and passages in aircraft structures, preventing fluid ingress or leakage.
  • Lightweight Fastening Solutions: Their headless design reduces weight and space, critical in high-performance aerospace assemblies.
  • Corrosion Resistance: Aluminium alloy 5086 provides outstanding resistance against corrosion in marine and atmospheric environments, extending component lifespan.
  • Precision Assembly: Tight dimensional tolerances ensure that components fit accurately, maintaining structural integrity and safety.
  • Maintenance and Repair: Facilitates easy installation and removal during servicing without requiring protruding heads, ideal for confined spaces.

Related Standards

For comprehensive application and compliance in aerospace contexts, EN 3706:2012 aligns with several other standards:

  • EN 2424 – Aerospace series for product marking, ensuring consistency in traceability and identification.
  • EN 2699 – Defines properties and dimensional criteria for aluminium alloy 5086 bars used in aerospace.
  • EN 3707 – Covers specifications for installation holes compatible with headless threaded plugs.
  • ISO 5855-1 – General requirements for aerospace MJ threads.
  • ISO 965-3 – Tolerances and deviations related to metric screw threads, crucial for ensuring interoperability.

By adhering to EN 3706:2012, aerospace manufacturers and maintenance engineers guarantee the use of high-quality, standardized headless threaded plugs that meet the stringent demands of the aerospace industry. This results in improved safety, reliability, and performance of aerospace components in diverse operating conditions.

Frequently Asked Questions

EN 3706:2012 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Headless threaded plugs, cross recess, in aluminium alloy 5086". This standard covers: This standard specifies characteristics of headless threaded plugs, cross recess, in aluminium alloy 5086, for aerospace purpose.

This standard specifies characteristics of headless threaded plugs, cross recess, in aluminium alloy 5086, for aerospace purpose.

EN 3706:2012 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.

EN 3706:2012 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)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Brezglava navojna zapirala s križno zarezo iz aluminijeve zlitine 5086Luft- und Raumfahrt - Verschlussschraube ohne Kopf mit Kreuzschlitz, aus Aluminiumlegierung 5086Série aérospatiale - Bouchons filetés, sans tête, empreinte cruciforme, en alliage d’aluminium 5086Aerospace series - Headless threaded plugs, cross recess, in aluminium alloy 508649.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studs49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 3706:2012SIST EN 3706:2012en,de01-maj-2012SIST EN 3706:2012SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3706
March 2012 ICS 49.030.20 English Version
Aerospace series - Headless threaded plugs, cross recess, in aluminium alloy 5086
Série aérospatiale - Bouchons filetés, sans tête, empreinte cruciforme, en alliage d'aluminium 5086
Luft- und Raumfahrt - Verschlussschraube ohne Kopf mit Kreuzschlitz, aus Aluminiumlegierung 5086 This European Standard was approved by CEN on 24 September 2011.
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-CENELEC 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-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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3706:2012: ESIST EN 3706:2012
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