1/2" x 10" Strong-Bolt® 2 Wedge Anchor 304 Stainless Steel STB2-501004SS, 25/Box

Simpson Strong-Tie



  • 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 in., and lightweight concrete-over-steel deck thickness of 2-1/2 in. and 3-1/4 in.
  • Tested per ACI355.2 and AC193
  • Size: 1/2 in. x 10 in.
  • Made from Type 304 stainless steel for long-lasting corrosion resistance
  • Quantity: 25
Products specifications
Bit Size1/2"
Minimum EmbedmentSee PDF
Box Qty25
Thread Length6"
Thread Type1/2" - 13
PrimaryConcrete only
Material304 Stainless Steel
Minimum SpacingSee PDF
Minimum Edge DistanceSee PDF
Maximum Fixture ThicknessSee PDF
Minimum Fixture Hole Diameter (In Place)9/16"
Minimum Fixture Hole Diameter (Hole Spotted)1/2"
Length ID CodeR
Maximum Torque65 ft./lbs.
Wrench Size For Nut3/4"
Length MeasurementEnd to End
Brand NameSimpson Strong-Tie
* Values shown are average ultimate values and are offered only as a guide and are not guaranteed. A safety factor of 4:1 or 25% is generally accepted as a safe working load

The information on this page is intended for preliminary guidance only. For complete safety and to verify accurate information, please consult the (PDF linked below) to obtain the manufacturer’s values when selecting the anchors for your project.

Code listed for cracked and uncracked concrete, and masonry applications, the Simpson Strong-Tie® 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. The Strong-Bolt 2 is available in carbon steel, Type 304 and Type 316 stainless steel.

Do not use an impact wrench to set or tighten the Strong-Bolt 2 anchor.
Caution: Oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor’s load capacity.
  1. Drill a hole in the base material using a carbide drill bit the same diameter as the nominal diameter of the anchor to be installed. Drill the hole to the specified minimum hole depth, and blow it clean using compressed air. (Overhead installations need not be blown clean.) Alternatively, drill the hole deep enough to accommodate embedment depth and dust from drilling.
  2. Assemble the anchor with nut and washer so the top of the nut is flush with the top of the anchor. Place the anchor in the fixture, and drive it into the hole until the washer and nut are tight against the fixture.
  3. Tighten to the required installation torque.


Link Image Catalog PDF

Link Image Product Information (on Simpson Website)

Package information
12.6 in. x 3.54 in. x 3.54 in.,  15.75 lbs.

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Carton Reference 10707392216985

Pallet Reference 50707392216983