[Healeys] Spring washers don't work !

[Derek Job]

All,

Yesterday must have been a slow day as I found myself googling 'spring
washers' in the interests of increasing my limited knowledge of all things
mechanical.

One of the results was the artilce below, with video tests, which concludes
that under various circumstances,spring washers, as well as not preventing
screw loosening, can actually make it worse.

Interesting stuff. What is the view of the list experts out there?

http://www.boltscience.com/pages/helicalspringwashers.htm

cheers

Derek