Simpson Strong-Tie STB2-25214R25 1/4" x 2-1/4" Strong-Bolt2 25ct
The Strong-Bolt 2 wedge anchor is the next-generation solution for cracked and uncracked concrete. Following rigorous testing according to ICC-ES acceptance criteria, the Strong-Bolt 2 anchor received classification as a Category 1 anchor, the highest attainable anchor category for performance in cracked concrete under static and seismic loading. Available in stainless steel, it is code-listed by ICC-ES under the 2012 IBC requirements for post-installed anchors in cracked and uncracked concrete.
Features:
Category 1 anchor classification: The Strong-Bolt 2 anchor received classification as a Category 1 anchor, which is established by performance in reliability tests in accordance with AC193 and ACI355.2 test criteria. Category 1 is the highest attainable anchor category for reliability.
Tri-segmented clip: Each segment adjusts independently, increasing follow-up expansion should the hole increase in size as a result of a crack.
Dual embossments on each clip segment: Enables clip to undercut into the concrete thereby increasing follow-up expansion should a crack occur.
High-strength alloy clip on carbon-steel anchors: This special alloy clip offers improved performance.
Standard (ANSI) fractional anchor: Fits most fixtures and installs with common drill bit sizes and tools.
Material:
Carbon-steel stud with special alloy clip; stainless-steel stud with stainless-steel clip.
The proprietary design of the tri-segmented clip has dual undercutting embossments on each segment, which enable secondary or "followup" expansion if a crack forms and intersects the anchor location. This significantly increases the ability of the Strong-Bolt 2 wedge anchor to carry load if the hole expands as a result of the crack.
