wheel bearing nut lock washer (bender), MB-GPW req 4 per vehicle, A867
often damaged, used to prevent outer nut (item A66) from loosening
Dana Axles Model 23, 25, 27, require 1ea at each wheel
and 2ea A866 nut and 1ea A865 keyed washer
installation video
https://youtu.be/tmPPvPAGzCg