British Standards Institution

Source:: BSI
Committee:: ACE/12 - Aerospace fasteners and fastening systems
Categories:: Washers and other locking elements
Comment period start date:: 24/03/2025
Comment period end date:: 24/05/2025
Number of comments:: 8

Comment by:

24th May

Scope

This British Standard specifies the materials, dimensions and protective finish of carbon steel and corrosion-resisting steel washers, generally used with timber on aircraft. The washers are primarily for use with BA, BSF and BSW threaded fasteners.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

13/03/2025

3. Public Comments

Public Comments start date:

24/03/2025

Public Comments end date:

24/05/2025

4. Comment Resolution

Comment Resolution start date:

23/10/2025

5. Approval

6. Publication

Publication start date:

28/11/2025

Learn more about the standards development process

Standards Development

BS SP 18 and 19 Specification for washers for aircraft purposes (primarily for use with timber)

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