Simpson Strong-Tie Strong-Bolt 2 Wedge Anchor 1/2 X 5-1/2 25 per Pack STB2-50512

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.

Features
Chamfered top designed to prevent mushrooming during installation
Qualified for static and seismic loading conditions (seismic design categories A through F)
Suitable for horizontal, vertical and overhead applications
Qualified for minimum concrete thickness of 3 1/4", and lightweight concrete-over-steel deck thickness of 2 1/2" and 3 1/4"
Standard (ANSI) fractional sizes: fits standard fixtures and installs with common drill bit and tool sizes
Tested per ACI355.2 and AC193

Zinc-plated carbon steel or stainless steel (Type 304; Type 316)