Simpson Strong-Tie 3/8″ x 5″ Strong-Bolt 2 Wedge Anchors – Fully Assembled, Carbon Steel, Zinc (50-Pack) STB2-37500F50

Code listed for cracked and uncracked concrete, and masonry applications, the Strong-Bolt 2 wedge-type expansion anchor is an optimal choice for high-performance even in seismic and high-wind conditions. Dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location; this feature significantly increases the ability of Strong-Bolt 2 to carry load if the hole expands.