British Standards Institution

Source:: CEN
Committee:: ACE/12 - Aerospace fasteners and fastening systems
Categories:: Bolts, screws, studs
Number of comments:: 0

Scope

This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series.

Classification: 1 100 MPa[1]/315 °C[2].

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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:

09/09/2024

3. Public Comments

Public Comments start date:

10/10/2024

Public Comments end date:

03/12/2024

4. Comment Resolution

Comment Resolution start date:

23/02/2026

5. Approval

6. Publication

Publication start date:

16/04/2026

Learn more about the standards development process

Standards Development

BS EN 4509 EN 4509 Aerospace series. Screw, 100° countersunk normal head, offset cruciform recess, threaded to head, in titanium alloy, anodized, with aluminium pigmented coating, metric series. Classification: 1 100 MPa (at ambient temperature)/315 °C

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