A stainless steel pal nut is a type of fastener that is used to secure a bolt or screw in place. It is typically made of stainless steel, which makes it resistant to rust and corrosion. Pal nuts have a small, protruding tab that can be bent over the top of the bolt or screw to lock it in place. They are commonly used in applications where vibration or movement may cause traditional nuts to loosen.