Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures
Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures
(OP)
Has anyone been up to speed on the defective MS21042/NAS1291 self-locking nuts being reported due to improper cad coating processes?
Any wisdom from the Forum would be appreciated.
Any wisdom from the Forum would be appreciated.





RE: Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures
RE: Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures
The NAS1291C*M nuts [A286, Passivated + SFL] should be a fool-proof alternative.
Regards, Wil Taylor
Trust - But Verify!
We believe to be true what we prefer to be true.
For those who believe, no proof is required; for those who cannot believe, no proof is possible.
RE: Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures
RE: Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures
What is highly unusual is that these nuts were in use on an aircraft wheel assy... which is very odd. I would have expected to see A286 or I-718 HS wheel nuts with solid film lubricant, such as NAS1804L6, NAS1805L6, NAS1757, NAS1758, NAS1759.
Regards, Wil Taylor
Trust - But Verify!
We believe to be true what we prefer to be true.
For those who believe, no proof is required; for those who cannot believe, no proof is possible.
RE: Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures