No wave washer, but TBH the spline is so tight you can adjust the preload by not doing them up that little bit more. I’ve used them for ages, great cranks.
Not sure on the exact chainline as I needed to space mine out a bit (big chainring on a Cervelo T4 with poor clearance)
I was told on Weightweenies-forum that these use a wave washer for preload. On to the next question, is the chain line true to specs 42.5mm?