Providing the ultimate in corrosion, rust and stain resistance. The 410 Stainless Steel Tapcon is the most universal screw for applications in any climate. As the original Concrete screw anchor that revolutionized the construction world, Tapcon brand Concrete anchors deliver the ease of use, superior precision and the unparalleled performance that professionals demand. Tapcon Concrete screw anchors draw from its unique ability to TAP its own threads into Concrete, making it an excellent alternative to expansion anchors, plugs, and lag shields. Use Tapcon Concrete screw anchors for installing sill plates, electrical equipment, furring strips, and many other applications that require fastening into brick, block, or Concrete.