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Conditions for approval required by: Julien Gauther
Certification of Aerospace Products to international quality Standards
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Since EN4178-060006F screw is too short in grip length to be both fatigue and double shear tested, this qualification should be restricted to length range from 003 to 011. (ISO9152, clause 5.4.2, note a) and clause 5.4.3, note a)).
Many thanks in advance,
Best regards.
Julien
Good afternoon Julian.
Understand your comment
Submit your comment to the manufacturer.
I got the following explanation:
For the initial qualification we carried out these two tests (see Coc en4178-060020F attached). We have not changed the manufacturing process.
And we manufactured diameter 050 (we can apply the analogy), see CoC EN4178-050035F.
We want to maintain all lengths.
Have added the above-mentioned CoCs to the Additional Documents of this report
Regards
Kees
Good afternoon Kees,
I am happy with your answer, so, approved from my side for EN4178-060 all lengths [003-060].
Best regards.
Julien