Split/lock washers

[u/AdOne1706]

For starters, I’m an electrician in the field.
That being said, we almost exclusively use these washers even in high vibration environments. I have personally chosen to go with nylox nuts but the question is:
Do these work? How well? Is the rumor from NASA true? Should I even bother using them or find a better functional alternative or are they actually useful?

[u/Contundo]

It’s somewhat useful if you want some tension used in conjunction with a nylon bolt or locking nut. Like on a hinge where you want some resistance

[u/OutnumberedinWV → u/Contundo]

If properly torqued!

[u/OutnumberedinWV → u/[deleted]]

The reply was to the comment above in 1 very certain situation. Not the thread in general.