The production of most screws is now overseas, with our "friends" in China leading the way. Stainless screws are much softer than regular plated steel screws. I recently did a door repair (metal door) using SS screws. First ones I bought from Lowes. The heads stripped terribly, so I went to Wilder's in Raleigh and bought some there. After telling the counterman the problem I was having, he suggested that I first install a plated steel screw, back it out and then install SS screw in it's place. Also do final tightening by hand. Problem solved. Klingspor's carries a selection of the black oxide coated wood screws that are of VERY HIGH QUALITY. Never have had a problem with one yet. Several years ago, I redecked a deck for a friend. Spent extra money and bought "premiun galvinized" screws. Two years later, the deck was covered in rust stains from screws. Probably would have been better to bought the ceramic coated ones from Lowes. I'm afraid with the new treatment of wood, it is only a matter of time before we see massive failures of decks due to fasteners corroding. I have removed nails that were less than a year old that looked like they were ten years old.