Skip to main content

Simpson Strong-Tie® STB2-50334 Strong-Bolt® 2 Wedge Anchor, 1/2 in Dia, 3-3/4 in OAL, 2-1/16 in L Thread, Carbon Steel, Zinc Plated



Simpson Strong-Tie® Wedge Anchor, Series: Strong-Bolt® 2, 1/2 in Dia, 3-3/4 in Overall Length, 2-1/16 in Thread Length, Carbon Steel, Zinc Plated, 2-3/4 in Minimum Embedment Depth, 1/2 in Drill, 1/2-13, 3/4 in Head, 5-1/2 in Maximum Work Thickness, 115000 psi Tensile

The Simpson Strong-Tie Strong-Bolt 2 wedge anchor is now available in Type 304 stainless steel in standard sizes. Previously available only in Type 316 and carbon steel, the additional product offering allows you to choose the best material solution for your job. The Strong-Bolt 2 wedge anchor is an optimal choice for cracked and uncracked concrete. Following rigorous testing according to ICC-ES acceptance criteria, the Strong-Bolt 2 wedge anchor received classification as a Category 1 anchor, which is the highest attainable category for performance in cracked concrete under static and seismic loading. It is code listed by ICC-ES under the 2015 IBC and ACI 318 strength design requirements for post-installed anchors in cracked and uncracked concrete.


Diameter 1/2 in
Drill Size 1/2 in
Finish Zinc Plated
Head Size 3/4 in
Material Carbon Steel
Maximum Work Thickness 5-1/2 in
Minimum Embedment Depth 2-3/4 in
Overall Length 3-3/4 in
Series Strong-Bolt® 2
Tensile Strength 115000 psi
Thread Length 2-1/16 in
Thread Size 1/2-13

Country of Origin: China

Standards and Approvals: ASTM B633, Class SC 1, Type III, Florida Statewide Product FL15731, City of Los Angeles RR 25891, RR 25936, UL File Ex3605, FM 3043442, 3047639

For optimal performance in cracked and uncracked concrete as well as uncracked masonry


  • 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, enable the clip to undercut into the concrete, thereby increasing follow-up expansion should a crack occur
  • Standard (ANSI) fractional anchor, The Strong-Bolt 2 is sized to fit most fixtures and it installs with common drill bit sizes and tools
  • Standard fractional sizes fits standard fixtures and installs with common drill bit and tool sizes
  • Carbon steel stud with special alloy clip
  • Carbon steel ASTM A563 grade A nut
  • Carbon steel ASTM F844 washer
  • Carbon steel ASTM A568 clip
  • 9/16 in Dia baseplate clearance hole
  • 60 ft-lb installation torque
  • 3 in D minimum hole
  • 85000 psi yield strength
  • 9/16 in minimum fixture hole

Recently Viewed Items

Loading recently viewed products...
Loading product details...