I wonder if a Fashion Mate screw would be the same as the 413. Several times, I've noticed that the presser foot is loose on my 301, so now I check it frequently. Husband says use loctite. When I asked if that would make it permanent, he said the red loctite would be permanent, but the blue would not. A friend was practicing using a walking foot on an older Kenmore and it kept getting loose until the walking foot broke.