British Standards Institution

Source:: CEN
Committee:: ACE/12 - Aerospace fasteners and fastening systems
Categories:: Bolts, screws, studs
Comment period start date:: 12/06/2025
Comment period end date:: 05/08/2025
Number of comments:: 0

Comment by:

5th Aug

Scope

This document specifies the dimensions of uncoated double hexagon head bolts, close tolerance, with MJ-thread, medium thread length, in heat-resisting nickel base alloy NI-P100HT for aerospace applications.

Maximum test temperature of the parts is 650 °C.

These bolts are used in aerospace fastening systems mainly stressed in shearing force.

Read draft and comment

Comment on proposal

Required form fields are indicated by an asterisk (*) character.

How important do you think standardization is in this area? *

Do you agree that a standard on this subject is feasible?: *

Please give reasons for your selections above: *

Would you or your organization use the standard? *

Would you or your organization be prepared to participate in the development of the standard or to comment on the draft when it is available? *

Are you aware of any regulation, existing standards and other good practice information in this area in the UK (e.g. Industry codes of practice; company specifications, international or European Standards)? *

Would the development of a standard(s) in this area have a particular impact/relevance to SME, consumer, environmental or societal interests? *

Are you aware of any other organizations to which this proposal may be relevant? If so please provide details below. *

Additional comments on the scope or proposal:

Although BSI will not usually enter into correspondence regarding individual comments or suggestions we may wish to contact you to seek further clarification. Please indicate whether this will be acceptable: *

Discard

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

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

09/05/2025

3. Public Comments

Public Comments start date:

12/06/2025

Public Comments end date:

05/08/2025

4. Comment Resolution

Comment Resolution start date:

27/10/2026

5. Approval

6. Publication

Publication start date:

09/02/2027

Learn more about the standards development process

Standards Development

BS EN 3327 EN 3327 Aerospace series. Bolts, double hexagon head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated. Classification: 1 275 MPa/650 °C

Scope

Comment on proposal

Discard changes?

Submit comment

Submit comment

Follow standard

Unfollow standard

Error