The Titen HD anchor is a high-strength screw anchor for concrete and masonry. It is designed for optimum performance in both cracked and uncracked concrete. 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. Titen HD® 1/4 in. x 3 in. Heavy-Duty Screw Anchor (50-Qty) (Pack of 250). Titen HD® 1/4 in. x 3 in. Heavy-Duty Screw Anchor (50-Qty) (Pack of 250) (Pack of 24500).