Simpson Strong Tie STB2-50334 Strong Bolt 2
*For further description please see Simpson Strong-Tie Anchoring and Fastening Systems Catalog.
**Click Load Table icon for size, drill bit dia.(in.), wrench (in.) and box/carton quantities.
STRONG-BOLT® 2 Wedge Anchor for Cracked and Uncracked Concrete
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.
Available in the popular 3/8" diameter, the Strong-Bolt 2 anchor is ideal for MEP applications in cracked concrete, such as hanging pipes, struts, equipment anchorage and other fixtures overhead. The anchor is also effective for lightweight- concrete applications, including concrete-over-metal decking.
The Strong-Bolt 2 wedge anchor in type 316 stainless steel** also offers optimum performance in both cracked and uncracked concrete, meeting 2012 IBC standards for post-installed anchors. This wedge anchor is ideal for corrosive environments, including construction in coastal areas, wastewater and sewage treatment facilities, food processing facilities, pulp and paper mills, and other high-exposure environments.
* the 1" diameter is classified as Category 2
** 1/4" diameter Strong-Bolt 2 are also available in type 304 stainless steel
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.
The 3/8" anchor solution approved for 3 ¼" concrete thickness: The Strong-Bolt 2 anchor can be installed in cracked concrete with a minimum thickness of 3 ¼", including concrete-over-metal decking.
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.
Type 316 stainless-steel clip on stainless steel anchors: In addition to superior corrosion resistance, a stainless-steel clip offers "memory" that contributes to the anchor's performance if the hole increases in size because of a crack.
Carbon-steel stud with special alloy clip; stainless-steel stud with stainless-steel clip.
Zinc-plated (carbon-steel) Type 316 & 304 Stainless Steel
ICC-ES ESR-3037 (PDF) (carbon and stainless steel - in cracked and uncracked concrete)
IAPMO UES ER-240 (PDF) (carbon steel in CMU)
Florida Statewide Product Approval FL15731
City of Los Angeles RR 25891 (PDF) (carbon and stainless steel - in cracked and uncracked concrete)
City of Los Angeles RR 25936 (PDF) (carbon steel in CMU)
Underwriters Laboratories FIle Ex3605
Factory Mutual 3043442 and 3047639
The Strong-Bolt 2 wedge anchor has been tested in accordance with the ICC-ES Acceptance Criteria for Mechanical Anchors in Concrete Elements (AC 193) and ACI 355.2 for the following:
Static tension and shear loading in cracked and uncracked concrete
Seismic and wind loading in cracked and uncracked concrete
Performance in cracked concrete
Performance in lightweight concrete over metal deck