The Disc-Lock Washer harnesses Disc-Lock’s wedge-locking system to prevent nuts and bolts coming loose. Under vibration, a nut or bolt will attempt to rotate loose but the interlocking cams and non-slip ridges of the Disc-Lock Washer work together to create a jamming effect, preventing the nut or bolt from rotating and maintaining joint integrity.
For more information visit https://www.disc-lock.co.uk
Here i am bumbling along trying to get some brass to stick to my grease cup! skip through the beginning if you actually want to see the method that worked for me.