1/2 x 4 Titen HD® Heavy-Duty Screw Anchor Mechanically Galvanized (20) The TITEN HD® anchor is a patented, high-strength screw anchor for concrete and masonry. It is designed for optimum performance in both cracked and uncracked concrete; a requirement that the 2006 IBC places on post-installed anchors. The high strength, easy to install TITEN HD® anchor has been tested and shown to provide outstanding performance in cracked and uncracked concrete under both static and seismic loading conditions. The self-undercutting, non-expansion characteristics of the TITEN HD® anchor make it ideal for structural applications, even at reduced edge distances and spacings. Recommended for permanent dry, interior, non-corrosive environments or temporary outdoor applications.