For an appearance, I use chrome steel fasteners put them in and touch up the hex with clear nail polish. Tiny Dremel buff and chrome polish for a touch up if the hex starts to rust up later. Maybe just me and most of my experience with small SS fasteners has been when I worked on Harley's, but I've had really bad luck with smaller SS fasteners 1/4" or less in AL threads and have had them fracture lengthwise up the threads down in the hole so that you can't face it or center punch it. And drilling SS is PITA no matter what you're doing.