Refine by. Stainless Steel Tapcon® concrete screws are manufactured from 410 stainless steel and are magnetic. They are coated with Climaseal® to increase rust resistance and to enhance use in moist atmospheres.Click to see full answer. Considering this, what are Tapcon screws made of?Tapcons are a specific brand name and are the original concrete screws which are patented and American made. Tapcons are coated with a special rust-resistant material called Climaseal®. The Climaseal coating is blue and is a distinctive product identifier.Secondly, do I need a hammer drill for Tapcon screws? Before a Tapcon masonry screw can be installed, a hole must be drilled into the masonry. Use a hammer drill to ensure that the hole has the proper tolerance. The carbide bit diameter required for the 3/16” screw is 5/32”. Herein, do Tapcon screws rust? Tapcons are coated with Climaseal®. This coating, when applied on top of 410 stainless steel, gives these concrete screws superior rust resistance. This coating is called a thermosetting polyester coating and is a result of a three-step process.Can Tapcons be reused?Tapcon Concrete Screws are removable, however it is not recommended to reuse the same hole because the cutting threads can compromise or destroy the holding power.