If you're talking about split-ring lock washers, I would think again. They do not accomplish any kind of locking, and may make vibration-induced loosening _wors

If you're talking about split-ring lock washers, I would think again. They do not accomplish any kind of locking, and may make vibration-induced loosening _worse_ by providing a small opening force. They are useless for almost all purposes. If you mean something like a Nord-Lock washer, then carry on.