The "flat washer" is a spring washer, it isn't flat.  The concave side goes against the cone washer.

 

To avoid the problems at the beginning of this very old thread, make sure the nut is tight.  Re check it a few drives later, also.

Yes the domed side goes towards you, the newer ones are marked with "out" but I just picked up two sets of wheel hub hardware and the one nut was marked on the right side but the other said "out" on what was really supposed to be "in, so always just look for the convex and put it towards you

Convex side out. If you have to, put it on a flat surface to double check

I had a 84 gl wagon 4wd with manual trans that went to the junk yard. Would those front hubs fit/work onto the front of a 92 loyale 2wd w/ manual trans. 

Hi, and welcome to the forum.  Holey zombie thread...  It would be a lot better to start a new thread, than post on the 3rd page of a 2 year old one...  But anyway,
The 84 may or may not.  I know first hand that 86-93 are interchangeable.