Re: Stainless nuts bolts in Aluminum boat

[mr-asa]

quote BillW:

Not to completely re-direct the thread; but I had been thinking of posting the question, “What, exactly, causes galling of stainless threads?” I KNOW the result all too well; and I KNOW how to AVOID it. What I want to know WHY it happens. (Please don’t tell me because there is no grease; I get that already.) It seems to basically weld itself, with virtually no heat, to speak of. How in tarnation is that possible?

Here’s a NASA paper about it (and a couple other fastener oriented things)
http://ntrs.nasa.gov/archive/nasa/casi. … 009424.pdf