SIST EN 3788:2004
(Main)Aerospace series - Pipe coupling 8°30' - Protective caps
Aerospace series - Pipe coupling 8°30' - Protective caps
This standard specifies the characteristics for protective caps for pipe couplings 8°30', used to protect metric pipe ends during transportation and storage, for aerospace applications. The caps shall be pushed on/off the tube ends.
Luft- und Raumfahrt - Rohrverschraubung 8°30' - Schutzkappen
Série aérospatiale - Systeme de raccordement 8°30' - Capuchons de protection
Aerospace series - Pipe coupling 8°30' - Protective caps
General Information
Relations
Overview
EN 3788:2001 is a European aerospace standard (prepared by AECMA and adopted by CEN) that specifies the characteristics of protective caps for pipe coupling 8°30'. It defines the requirements for push‑on/pull‑off caps used to protect metric pipe ends in aerospace fluid systems during transportation and storage. The standard covers configuration, materials, cleanliness, attachment force, and marking so caps provide consistent protection and traceability across the supply chain.
Key Topics and Requirements
- Scope: Protective caps for pipe coupling 8°30' designed for aerospace applications; intended to be pushed onto and removed from tube ends.
- Configuration and dimensions: Caps are manufactured to the dimensional drawings and code table referenced in the standard (figure/table). Unspecified dimensions may be left to the manufacturer within general tolerances.
- Material and appearance:
- Material: Polyethylene, grade I, virgin (LDPE).
- Colour: White.
- Cleanliness and finish:
- No visible contamination on internal or external surfaces.
- Internal surfaces and end faces must be free from burrs.
- Attachment characteristics:
- Caps must be firmly attached to the pipe yet removable using finger force.
- Parts may be supplied with a molding ring for extra gripping power.
- Tolerances and marking:
- General dimensional tolerances referenced to ISO 2768-1.
- Marking requirements follow EN 2424 (style F) plus the cap code from the standard’s table.
- Designation format example: PROTECTIVE CAP EN3788–08 (with optional intermediate code I9005 if required).
Applications and Who Uses It
- Aerospace manufacturers and suppliers specifying or supplying hydraulic and pneumatic tubing components.
- Quality engineers and procurement teams ensuring protective caps meet aerospace contamination, fit, and traceability requirements.
- Packing, shipping and storage teams who need standardized protection for pipe ends to prevent damage and contamination.
- Design and maintenance engineers selecting protective accessories compatible with 8°30' metric pipe couplings.
Practical benefits include standardized fit and removal force, contamination control, easier identification through marking, and reduced risk of damage during logistics.
Related Standards
- ISO 2768-1 - General tolerances for linear and angular dimensions.
- EN 2424 - Aerospace series - Marking of aerospace products.
Keywords: EN 3788:2001, protective caps, pipe coupling 8°30', aerospace, LDPE, metric pipe ends, transportation, storage, EN 2424, ISO 2768-1.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Pipe coupling 8°30' - Protective capsLuft- und Raumfahrt - Rohrverschraubung 8°30' - SchutzkappenSérie aérospatiale - Systeme de raccordement 8°30' - Capuchons de protectionAerospace series - Pipe coupling 8°30' - Protective caps49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 3788:2001SIST EN 3788:2004en01-maj-2004SIST EN 3788:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3788October 2001ICS 49.080English versionAerospace series - Pipe coupling 8°30' - Protective capsSérie aérospatiale - Système de raccordement 8°30' -Capuchons de protectionLuft- und Raumfahrt - Rohrverschraubung 8°30' -SchutzkappenThis European Standard was approved by CEN on 29 December 2000.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3788:2001 ESIST EN 3788:2004
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Frequently Asked Questions
SIST EN 3788:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe coupling 8°30' - Protective caps". This standard covers: This standard specifies the characteristics for protective caps for pipe couplings 8°30', used to protect metric pipe ends during transportation and storage, for aerospace applications. The caps shall be pushed on/off the tube ends.
This standard specifies the characteristics for protective caps for pipe couplings 8°30', used to protect metric pipe ends during transportation and storage, for aerospace applications. The caps shall be pushed on/off the tube ends.
SIST EN 3788:2004 is classified under the following ICS (International Classification for Standards) categories: 49.080 - Aerospace fluid systems and components. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3788:2004 has the following relationships with other standards: It is inter standard links to SIST EN 3788:2004/AC:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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