When building screen enclosures or replacing fasteners, we want to have as many products available to you as possible! Most aluminum structures are built with standard carbon steel fasteners which start to rust after a few years. At AF Screen we offer the carbon steel to people on a budget but we try to encourage everyone to choose the stainless steel fasteners as an upgrade. Getting this option as a new cage will save you money when building a new pool cage and when it’s time to replace your screws if you have an existing screen enclosure. It will also hold it’s value for years to come. It’s best to have that piece of mind that your fasteners are working at their highest capacity and not rusting away day by day!