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Old 04-09-2008
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For marine use, it is not the strength that matters as much as rust resistance. Plain carbon steel, even "soft" free machining steel, will make a screw that will hold parts together. But unless they are immersed in oil, rust will destroy 304 stainless in salt air. They call it stainless, but check it with a strong magnet before you buy! If a magnet has no attraction to it, it will probably last; if the magnet will pick up a screw, it probably will rust. That's a heck of a lot cheaper and more convenient than spectrographic analysis!
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1980 Endeavour 37 sloop, currently in the Mississippi near St Louis
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