prEN 6117

Aerospace series - Specification for lubrication of fasteners with cetyl alcohol

This specification defines the process applicable to the lubrication with cetyl alcohol of aerospace fasteners such as threaded bolts, blind fasteners, nuts, lockbolts, pins and collars. It defines the product application methods and the relevant quality assurance requirements for the lubrication of the commonly used fastener materials: aluminium alloys, alloy steels, stainless steels, titanium alloys and nickel base alloys.

Luft- und Raumfahrt - Spezifikation für Schmierung von Verbindungselementen mit Cetylalkohol

Diese Spezifikation legt das Verfahren zur Schmierung von Verbindungselementen für die Luft- und Raumfahrt mit Cetylalkohol fest, wie z. B. Gewindebolzen, Blindverschlüsse, Muttern, Verriegelungsbolzen, Stifte und Schließringe. Sie definiert die Verfahren zur Produktanwendung und die entsprechenden Qualitätssicherungsanforderungen für die Schmierung der am häufigsten verwendeten Verbindungselemente: Aluminiumlegierungen, legierte Stähle, nichtrostende Stähle, Titanlegierungen und Nickelbasislegierungen.

Série aérospatiale - Spécification de lubrification des éléments de fixation à l'alcool cétylique

No Scope available

Aeronavtika - Specifikacija za mazanje pritrdilnih elementov s cetilnim alkoholom

Ta specifikacija določa postopek, ki se uporablja za mazanje letalskih pritrdilnih elementov, kot so vijaki z navojem, slepi pritrdilni elementi, matice, zaklepni vijaki, zatiči in obroči, s cetil alkoholom. Določa metode nanašanja izdelka in ustrezne zahteve za zagotavljanje kakovosti pri mazanju običajno uporabljenih materialov za pritrdilne elemente: aluminijeve zlitine, legirana jekla, nerjavna jekla, titanove zlitine in zlitine na osnovi niklja.

General Information

• Status: Not Published
• Publication Date: 26-Sep-2027
• ICS: 49.030.01 - Fasteners in general
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3/WG 6 - Coatings for fasteners
• Current Stage: 4020 - Submission to enquiry - Enquiry
• Start Date: 26-Mar-2026
• Completion Date: 26-Mar-2026
• Ref Project: oSIST prEN 6117:2026 - Aerospace series - Specification for lubrication of fasteners with cetyl alcohol

Overview

prEN 6117 is a draft European Standard developed by CEN for the aerospace sector, titled Aerospace series - Specification for lubrication of fasteners with cetyl alcohol. This specification sets out detailed requirements for the lubrication process of aerospace fasteners using cetyl alcohol, covering various fastener types such as threaded bolts, blind fasteners, nuts, lockbolts, pins, and collars. It defines both the product application methods and essential quality assurance criteria for fasteners made from common aerospace materials, including aluminium alloys, alloy steels, stainless steels, titanium alloys, and nickel base alloys.

Adhering to prEN 6117 helps ensure consistent performance, safety, and compliance across aerospace assemblies, addressing the critical need for reliable lubrication in high-precision fastener applications.

Key Topics

• Lubrication Process Requirements
  Specifies procedures for cleaning and preparing fasteners, applying cetyl alcohol solutions, draining, and drying processes to ensure uniform lubrication coverage without detrimental effects on fastener performance.

• Cetyl Alcohol Grades and Solutions
  Classifies cetyl alcohol lubrication into distinct solution types and grades, with concentration ranges suitable for various application needs:

  • Type I: Solvent base solution
  • Type III: Water base solution
    Each type is associated with defined concentration grades to match fastener design and material specifications.

• Material Compatibility
  Covers application for a range of fastener materials widely used in aerospace construction, such as:

  • Aluminium alloys
  • Alloy steels
  • Stainless steels
  • Titanium alloys (with specific solvent restrictions)
  • Nickel base alloys

• Quality Assurance and Inspection
  Requirements for checking coverage, managing solution concentration, inspecting for contaminants, and maintaining a traceable quality management system in line with recognized aerospace standards.

Applications

The processes specified in prEN 6117 are crucial in aerospace manufacturing and maintenance where fastener performance and integrity directly impact safety and airworthiness. Key application areas include:

• Assembly of Aircraft Structures
  Enables secure, uniform, and reliable installation of threaded and blind fasteners, reducing risk of galling, mis-torque, and assembly failures.

• Maintenance and Repair Operations
  Provides methods for re-lubricating fasteners as part of in-service maintenance to prolong fastener life and secure proper function.

• Component Manufacturing
  Supports original equipment manufacturers (OEMs) in achieving standardized lubrication across large production batches, facilitating compliance with industry quality management systems.

• Quality Control Programs
  Outlines systematic inspection and testing regimes to verify lubrication coverage and compliance with customer and regulatory requirements.

By standardizing the lubrication process with cetyl alcohol, the aerospace industry benefits from enhanced fastener performance, reduced variability, and better controlled assembly operations.

Related Standards

When implementing prEN 6117, organizations should align with other widely recognized aerospace standards for quality and qualification, including:

• EN 9100: Quality Management Systems - Requirements for Aviation, Space and Defence Organizations
• EN 9133: Aerospace series – Quality Management Systems – Qualification procedure for aerospace standard products

Using prEN 6117 in conjunction with these standards ensures comprehensive control over the lubrication process for aerospace fasteners, supporting traceability, performance, and regulatory compliance throughout the lifecycle of aerospace products.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2026
Aeronavtika - Specifikacija za mazanje pritrdilnih elementov s cetilnim alkoholom
Aerospace series - Specification for lubrication of fasteners with cetyl alcohol
Luft- und Raumfahrt - Spezifikation für Schmierung von Verbindungselementen mit
Cetylalkohol
Série aérospatiale - Spécification de lubrification des éléments de fixation à l'alcool
cétylique
Ta slovenski standard je istoveten z: prEN 6117
ICS:
49.030.01 Vezni elementi na splošno Fasteners in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2026
ICS
English Version
Aerospace series - Specification for lubrication of fasteners
with cetyl alcohol
Série aérospatiale - Spécification de lubrification des Luft- und Raumfahrt - Spezifikation für Schmierung
éléments de fixation à l'alcool cétylique von Verbindungselementen mit Cetylalkohol
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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 6117:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Classification. 4
4.1 Type I — Solvent base solution . 4
4.2 Type II — Historical composition (not used in this version) . 4
4.3 Type III — Water Base Solution . 5
5 Products . 5
5.1 Cetyl alcohol . 5
5.2 Dilution . 5
5.2.1 Solvent . 5
5.2.2 Water . 6
6 Process description . 6
6.1 Preparation of solution . 6
6.1.1 Preparation of Type I solvent base solution . 6
6.1.2 Preparation of Type III water base solution . 6
6.2 Cleaning . 6
6.3 Application of cetyl alcohol solution . 6
6.4 Draining . 6
6.5 Drying . 6
7 Quality assurance requirements . 7
7.1 Inspection of parts . 7
7.2 Solution controls . 7
7.3 Contamination of solution . 7
8 Mixture life . 7
9 Quality assurance . 7
Bibliography . 8

European foreword
This document (prEN 6117:2026) has been prepared by the ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
r
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