Since the anchor is pre-expanded

1-8 x 3 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated

1/4-20 x 2 Combo Flat Sleeve Anchor Zinc Plated (100)

the Alligator anchors expand to allow for better weight distribution

Diameters over 2 1/2 inches have a meet a minimum of 140

3/4 x 4 Titen HD® Heavy-Duty Screw Anchor Zinc Plated (10) 1-8 Grade 5 Hex Cap Screws Zinc Plated Since the anchor is pre-expanded3 4 x 4 Titen HD Concrete Anchor Zinc Plated (10) . 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