BS EN 4491-2013 PDF

Full title and description

BS EN 4491:2013 — Aerospace series. Non-metallic materials. Anaerobic polymerisable compounds. Threadlocking. Torque strength 16 Nm. This European (EN) aerospace material standard specifies requirements for anaerobic polymerisable threadlocking compounds intended for aerospace applications and classified by a torque strength of 16 N·m.

Abstract

This standard defines the scope, normative references, terms and definitions, and the requirements applicable to anaerobic polymerisable threadlocking compounds with a torque strength rating of 16 N·m for aerospace use. It concentrates on performance and verification criteria appropriate to non-metallic adhesive compounds used in aircraft and related equipment.

General information

• Status: Current / Active.
• Publication date: 28 February 2013.
• Publisher: British Standards Institution (BSI) — adoption of EN 4491:2013 as BS EN 4491:2013.
• ICS / categories: 49.025.50 (Adhesives / non-metallic materials for aerospace).
• Edition / version: 2013 edition (BS EN 4491:2013).
• Number of pages: 12 pages.

Scope

This European Standard specifies the requirements relating to anaerobic polymerisable threadlocking compounds having a torque strength of 16 N·m for aerospace applications. It establishes the normative references, terms and definitions, symbols, and the performance/acceptance requirements necessary to ensure consistent, safe use of these threadlocking materials in aerospace assemblies.

Key topics and requirements

• Definition of anaerobic polymerisable threadlocking compounds and related terms.
• Classification by torque strength — specification for 16 N·m rated products.
• Normative references and referenced aerospace technical specifications that inform testing and acceptance criteria.
• Performance requirements and verification/testing procedures to confirm torque behaviour and suitability for aerospace service.
• Requirements intended to ensure material consistency and compatibility with aerospace assemblies (materials and processes).

Typical use and users

Primary users include aerospace manufacturers, OEMs, component suppliers, adhesive formulators, quality and conformity assessment laboratories, procurement specialists specifying adhesives for aircraft assemblies, and engineering teams responsible for fastener retention and joint integrity in aerospace structures and systems. The standard is used during product specification, supplier assessment, acceptance testing, and design validation.

Related standards

Related and referenced documents include other aerospace series technical specifications and drafting rules for anaerobic polymerisable compounds (for example PREN 3792 and TR 7000-7 are listed as related drafting/specification documents), and national/adopted equivalents such as I.S. EN 4491:2013 and DIN EN 4491:2013. Users should review connected aerospace material standards and any applicable national implementation notes when applying this standard.

Keywords

anaerobic, polymerisable, threadlocking, torque strength, 16 N·m, aerospace series, non-metallic materials, adhesive, fastener retention, BSI, EN 4491.

FAQ

Q: What is this standard?

A: BS EN 4491:2013 is the British adoption of EN 4491:2013 — an aerospace-series standard that sets requirements for anaerobic polymerisable threadlocking compounds rated at 16 N·m torque strength, intended for aerospace applications.

Q: What does it cover?

A: It covers scope, normative references, terms and definitions, symbols and abbreviations, and the specific requirements and verification methods for anaerobic threadlocking compounds with the 16 N·m torque classification for use in aerospace.

Q: Who typically uses it?

A: Aerospace manufacturers, adhesive suppliers and formulators, test and certification laboratories, procurement and quality teams, and aerospace design engineers who need to specify or validate threadlocking compounds for aircraft applications.

Q: Is it current or superseded?

A: The 2013 edition (BS EN 4491:2013) is listed as the active/current edition in commercial standards catalogues and resellers (publication 28 February 2013). There is no indication in those listings that it has been superseded as of the available catalog information; users should check their national standards body or BSI for any amendments or later revisions before final application.

Q: Is it part of a series?

A: Yes — it is part of the aerospace series of non-metallic materials standards and is connected to other aerospace technical specifications and drafting rules for anaerobic polymerisable compounds.

Q: What are the key keywords?

A: Anaerobic, polymerisable, threadlocking, torque strength, aerospace, adhesives, non-metallic materials, fastener retention.