British Standards Institution

Source:: BSI
Committee:: ACE/12 - Aerospace fasteners and fastening systems
Categories:: Bolts, screws, studs

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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:

29/08/2023

3. Public Comments (Complete)

Public Comments start date:

31/08/2023

Public Comments end date:

31/10/2023

4. Comment Resolution (Complete)

Comment Resolution start date:

12/02/2024

5. Approval (Complete)

6. Publication

Publication start date:

22/02/2024

Learn more about the standards development process

Standards Development

BS A 109:2024 AEROSPACE SERIES Bolts, shear, hexagonal heads, close tolerance shank, unified threads, alloy steel, cadmium plated (on head and thread only). Specification. Classification Rm = 127 600 – 156 600 lbf/in2 (880 to 1080 MPa) at ambient temperature | +190°C

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