Stainless steel fence nails have a couple main functions:
Secure fence posts into the ground
Stainless steel fence nails are often used to secure wooden fence posts into the ground. Long nails are driven in at an angle to help fasten the post. The corrosion resistance of stainless steel helps them last longer in the ground.
Attach fence boards and panels to posts
Shorter stainless steel fence nails can be used to attach fence boards, panels and pickets to the fence posts. They hold the fence boards securely in place.
Help waterproof the fence
Stainless steel nails are less prone to corrosion and rust. This helps keep water out and extends the lifespan of the fence. Zinc or galvanized steel nails can corrode over time, allowing water into joints.
Resist chemicals and organic acids
Due to their corrosion resistance, stainless steel nails are a good option for fences exposed to chemicals, fertilizers, soil acids or other corrosive substances. They won’t degrade as quickly.
Provide long-term durability
The combination of corrosion resistance and high strength make stainless steel nails a good option for fences that need to last for many years. They are able to withstand weather exposure with minimal deterioration.
So the main functions of stainless steel fence nails are to securely fasten fence posts and boards, help waterproof the joints, resist corrosion from the environment and provide long-term strength and durability for the fence. The material properties of stainless steel make it a good choice for many outdoor applications.