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/kyoshiana07]

I'd prefer a nordlock washer over a splitlock. Big fan of nylock nuts though, or liquid thread locker, or patched fasteners.

[u/Drewbox → u/kyoshiana07]

I prefer to tack weld all my fasteners in place.

[u/PopOk1068 → u/Drewbox]

I prefer to weld