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I used #10 SS screws with the hex/knurled head and SS lock washers & #10 SS flat washers I bought from Lowes to attach LocLine and at least 100 dives in salt water without any noticeable rust, not sure what the composition is, but they work. Also, Lowes had some SS "Tee" nuts that were great in case you are making a DIY and don't want to cut threads. Haven't noticed any rust there either. Understand about the knife, had one a few years back that rusted
but it was slow rust and just looked bad- not sure it affected function) I have used brass screws too where I couldn't find the SS size I wanted and they have worked well, none have broken off. I have noticed some issues with SS screwed into Aluminum where the aluminum corrosion slightly froze the screw in.
