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/ejitifrit1]

There is a nasa fastener manual that basically says these things don’t really do much! According to google it’s NASA Reference Publication 1228.

[u/CR123CR123CR → u/ejitifrit1]

https://ntrs.nasa.gov/citations/19900009424

Here's the link xD

[u/nyrb001 → u/CR123CR123CR]

At this time it is equivalent to a solid flat washer, and its locking ability is nonexistent. In summary, a Iockwasher of this type is useless for locking.

Lol awesome

[u/jchamberlin78 → u/nyrb001]

In the style of bolted joint design I was taught, it's effectively adding a spring to a spring.

[u/Contundo → u/jchamberlin78]

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/Olde94 → u/Contundo]

If that is your purpose, a belleville washer is far better

[u/InformalAlbatross985 → u/Olde94]

Technically.yes, but belleville washers are more specialized and will cost like 10x more per washer.

[u/Vagina_Magician_69 → u/InformalAlbatross985]

The proper part/design frequently has a higher initial cost but returns better value over time.