The Tapcon® concrete screw with the Climaseal® coating gives excellent rust resistance when used for indoor applications and outdoor applications. The minimum embedment of a Tapcon® concrete screw is 1” and the maximum embedment is 1-3/4”. The threads on the concrete screws are a maximum length of 1-3/4”.Click to see full answer. In this manner, are Tapcon screws corrosion resistant?Tapcon® is the #1 recognized screw anchor brand in the industry. The blue, corrosion-resistant coating enables them to withstand the harshest conditions. And their unmatched performance in concrete, block and brick applications make them an excellent alternative to expansion anchors, plugs and lag shields.Beside above, are Tapcon screws any good? Tapcon Concrete Screws Review. There are no inserts, so the anchors themselves are the very thing that bites into concrete, brick, stone, or masonry materials and provides a very secure connection. Also, do you need anchors with Tapcon screws? Tapcon Masonry Screws. Tapcon masonry screws are made for light duty fastening. They are manufactured with special threads that will thread into a predrilled hole in masonry material, such as concrete, concrete block, and brick.Why are Tapcon screws blue?The blue climaseal coating provides extra corrosion resistance for long anchor life. Different lengths of Tapcon screws are used for different thickness of materials being fastened. The blue climaseal coating provides extra corrosion resistance for long anchor life.