The hardware for the cells showed up, the bolts seem to be fairly good stainless steel, as are the flat and split washers. The battery interconnects are several thin sheets of copper stacked and heat shrinked together.
I don't like split washers in things that vibrate... like motorcycles, so I ordered some Nord-Lock washers.
I also ordered a JLD404 and shunt from LightObject. I'm not sure where I'm going to mount it yet.