We offer Phillips pan head stainless steel screws painted black or white with most of our hardware. These screws offer excellent corrosion resistance and look great for years while securing our hardware to your fence and gate.
The down side of stainless steel screws is that you pretty much have to pre-drill the holes you put them into. This is because stainless steel makes a horrible drill bit. There are two types of stainless commonly used for screws. One is too soft to cut steel, so the drill tip on a stainless steel tek screw will flatten out before cutting a hole, and the other is too brittle, causing the cutting edge on a tek screw made from this material to crack off before finishing a hole.
To answer the demand for a corrosion resistant tek screw that will drill through steel posts or aluminum post stiffeners as needed, we have begun offering our American made galvanized tek screw painted black, using the same black coating as on our stainless screws. These are capable of easily drilling through 1/4” of steel while cutting threads and drawing tight. The galvanized and painted finish is extremely resistant to corrosion.
Are they as good as stainless steel at preventing corrosion? It's hard to tell. We've had contractors using them on vinyl gate hardware installations for several years and have not had any complaints about rust. They do offer the best combination of strength, ease of installation, and endurance that we have seen, and unlike virtually every other fastener available in the fence industry, they are made right here in the U.S. of A.!