BS EN 3660-003-2023 PDF

Full title and description

STB BS EN 3660-003:2023 — Aerospace series — Cable outlet accessories for circular and rectangular electrical and optical connectors — Part 003: Grommet nut, style A. Product standard providing dimensional, material and performance specifications for grommet nuts (style A) intended for use with EN 3660 series connectors as adopted in the British/European catalogue of standards.

Abstract

This document specifies a range of grommet nuts, style A, including sizes, designations, temperature class limits and performance requirements for sealing and mechanical retention. It identifies the associated electrical connector(s) (EN 3660-002) and gives temperature classes (examples shown in the standard: Class N −65 °C to 200 °C; Class W −65 °C to 175 °C; Class K −65 °C to 260 °C; Class A −65 °C to 200 °C; Class T −65 °C to 175 °C; Class Z −65 °C to 175 °C) together with marking, torque and test requirements for product acceptance.

General information

• Status: Current / Published national adoption of EN 3660-003:2023 (active product standard).
• Publication date: 13 October 2023 (BS adoption/publication date).
• Publisher: British Standards Institution (BSI) — national implementation of EN 3660-003:2023 (equivalent to EN 3660-003 published by CEN).
• ICS / categories: 49.060 — Aerospace electric equipment and systems.
• Edition / version: 2023 (latest edition, replaces earlier editions).
• Number of pages: 16 (BS EN edition; tracked-change variants may have additional pages).

Scope

The standard defines a range of grommet nuts, style A, intended as cable outlet accessories for circular and rectangular electrical and optical connectors used in aerospace applications. It covers dimensional definitions, material and plating guidance, temperature-class assignments, mechanical characteristics (including torque and retention), sealing and environmental performance requirements, marking and identification, applicable tests and interchangeability considerations with associated EN 3660 product standards. The standard is intended for designers, manufacturers and procurement of connector accessories for aerospace equipment.

Key topics and requirements

• Definition of grommet nut styles and designations (style A) and associated dimensions.
• Temperature class assignments and allowable operating temperature ranges.
• Material and plating recommendations for corrosion and wear resistance.
• Mechanical requirements: torque limits, thread engagement and retention strength.
• Sealing and environmental performance tests (e.g., leak/seal integrity under specified conditions).
• Marking, mass and identification requirements for traceability.
• Reference to associated connectors and product standards (EN 3660-002 index and other EN 3660 product parts).

Typical use and users

Used by aerospace component designers, connector manufacturers, OEMs, maintenance organizations, procurement teams and test laboratories to specify, produce, verify and accept grommet nuts and cable outlet accessories for aircraft and aerospace systems. The standard supports engineering drawings, purchase specifications, conformity testing and supplier quality assurance.

Related standards

EN 3660 series product standards (see EN 3660-002 — Index of product standards) and other part numbers within EN 3660 (examples include various cable outlet and accessory parts such as styles A, K, 019, 033, 062, etc.). The BS EN 3660-003:2023 edition replaces earlier EN/BS EN editions of the same part. For connector compatibility and full system definitions consult EN 3660-002 and the referenced connector standards cited in the EN 3660 index.

Keywords

grommet nut; cable outlet; connector accessory; aerospace; EN 3660; style A; sealing; torque; temperature class; BSI; product standard; cable outlet accessories.

FAQ

Q: What is this standard?

A: BS EN 3660-003:2023 is the British-adopted edition of the European product standard that specifies requirements for grommet nuts, style A, used as cable outlet accessories for circular and rectangular electrical and optical connectors in aerospace applications.

Q: What does it cover?

A: It covers the range of grommet nut sizes and designations, dimensional requirements, materials and plating guidance, temperature classes and operating ranges, mechanical characteristics (including torque and retention), sealing and environmental performance tests, and marking/identification.

Q: Who typically uses it?

A: Connector and accessory manufacturers, aerospace OEMs, design and test engineers, procurement/specification writers and certification/test laboratories who need to specify, produce or verify cable outlet accessories for aircraft and related aerospace equipment.

Q: Is it current or superseded?

A: The 2023 edition is the current published edition for EN 3660-003 as of the 2023 adoption; it replaces earlier editions of EN/BS EN 3660-003. Always check your national standards body for confirmations of status and any national forewords or amendments before relying on the text for certification or procurement.

Q: Is it part of a series?

A: Yes — it is one part of the EN 3660 series (Aerospace series — Cable outlet accessories for circular and rectangular electrical and optical connectors). EN 3660-002 provides the index of product standards and other parts cover different outlet styles and accessory types.

Q: What are the key keywords?

A: Grommet nut, cable outlet accessory, aircraft connector accessory, EN 3660, style A, temperature class, sealing, torque, aerospace connectors.