DIN EN 6140 2020-11 PDF

Full title and description

STB DIN EN 6140 2020-11 — Adoption of EN 6140:2020 (Aerospace series) entitled "Plug, protective, non‑metallic, for NAS1760 fitting ends and AS33649 boss ports". The standard specifies design, dimensions, materials, performance, marking and packaging requirements for non‑metallic protective plugs used to seal aerospace fluid ports during storage and transport to prevent contamination, spillage and port damage.

Abstract

This document defines the required characteristics of non‑metallic protective plugs for NAS1760 fitting ends and AS33649 boss ports: configuration, tolerances, material and colour guidance, sealing surfaces, proof pressure and temperature limits, cleanliness and single‑use expectation, qualification/inspection and packaging/marking rules intended to prevent contamination, spillage, damage and clogging of fluid ports. Typical material examples and test/quality notes (e.g., HD‑PE material properties, proof pressure and cleanliness classes) are given in the normative text.

General information

• Status: Published / Current national adoption (EN 6140:2020 adopted by CEN members and published as national standards such as DIN EN 6140).
• Publication date: 2020-11 (national editions commonly dated 01 November 2020; EN 6140:2020 text published in 2020).
• Publisher: European Committee for Standardization (CEN) / published and made available through national bodies (e.g., DIN, AENOR, BSI, EVS).
• ICS / categories: 49.080 — Aerospace fluid systems and components.
• Edition / version: 2020 (designated in national catalogs as DIN EN 6140:2020-11 or equivalent national adoption identifiers).
• Number of pages: Original EN document approximately 11 pages; national publications vary (commonly reported between ~8 and 16 pages; some distributors list longer cover/metadata additions).

Scope

Specifies dimensions, tolerances and required characteristics of non‑metallic protective plugs for NAS1760 fitting ends and AS33649 boss ports, to seal fluid ports during transport and storage to prevent contamination by moisture, fluids, chemicals and particles, spillage inside packaging or aircraft sections, port and pipe end damage, and clogging due to plug ingestion. Because of cleanliness requirements, plugs are intended for single use.

Key topics and requirements

• Defined configurations, dimensions and tolerances for plug sizes that mate with NAS1760 and AS33649 interfaces.
• Material specifications and recommendations (examples include non‑metallic polymers such as HD‑PE with specified density/MFI ranges in normative guidance where applicable).
• Sealing area geometry and proof pressure requirements (typical proof pressure ~100 kPa for qualification tests where specified).
• Environmental limits: storage/transport and installation/removal temperature ranges (examples include −54 °C to +85 °C for certain plugs as given in the normative text).
• Cleanliness and single‑use requirement (cleanliness class and packaging rules to avoid contamination; requirements for individual, contamination‑protective packaging).
• Qualification, first‑article inspection and lot testing requirements; marking, designation and packaging labelling (references to EN 2424 for marking practices).
• Manufacturer responsibilities: quality management expectations and supplier inspection responsibilities (aerospace quality systems referenced as best practice).

Typical use and users

Used by aerospace OEMs, component suppliers, protective‑parts manufacturers, procurement and quality/inspection teams, MRO organisations and logistics/packaging engineers engaged in the storage, transport and handling of hydraulic/fluid system components and assemblies. Purchasing and procurement staff consult the standard when specifying protective plugs for NAS1760/AS33649 interfaces.

Related standards

Referenced or complementary documents typically include EN 2424 (marking/identification), EN 6079 (related product/technical references noted in national catalogs) and specifications for the mating fittings (NAS1760 and AS33649). National adoption texts may list additional normative references.

Keywords

EN 6140, protective plug, non‑metallic plug, NAS1760, AS33649, aerospace plugs, sealing plug, packaging cleanliness, proof pressure, HDPE, DIN EN 6140, STB DIN EN 6140 2020-11.

FAQ

Q: What is this standard?

A: EN 6140:2020 (published as national adoptions such as DIN EN 6140:2020‑11 / STB designation) is a European aerospace series standard that specifies requirements for non‑metallic protective plugs for NAS1760 fitting ends and AS33649 boss ports used to seal fluid ports during storage and transport.

Q: What does it cover?

A: It covers geometry, tolerances, materials, sealing surfaces, proof pressure and temperature limits, cleanliness and packaging/marking, plus qualification and inspection requirements to prevent contamination, spillage and port damage.

Q: Who typically uses it?

A: Aerospace OEMs, suppliers of protective plugs and sealing parts, quality/inspection engineers, procurement teams, MRO organisations and logistics/packaging engineers.

Q: Is it current or superseded?

A: The EN 6140:2020 text was published in 2020 and adopted nationally in 2020–2021; it is treated as current unless superseded by a later revision — users should confirm the current national status with their national standards body before procurement or certification activities.

Q: Is it part of a series?

A: Yes — it is an "Aerospace series" EN document and sits alongside other ASD‑STAN / CEN aerospace product standards; it also references related EN documents (for example EN 2424) and interfaces specified by aerospace fitting standards such as NAS1760 and AS33649.

Q: What are the key keywords?

A: Protective plug, non‑metallic, NAS1760, AS33649, aerospace fluid systems, sealing, packaging cleanliness, proof pressure, DIN EN 6140.