Type 316 stainless steel has the best corrosion resistance among standard stainless steels. It resists pitting and corrosion by most chemicals, and is particular resistant to saltwater corrosion.
Thread
coarse, fine
Used
Essential quick-connection tool with dozens of uses at home, farm, work. Non-rusting solid stainless steel great for marine applications. Use with ropes, chains or cables for frequently removed.