Wedge Anchors, Stainless Steel, Simpson Strong-Bolt® 2

Heavy-duty concrete and masonry anchors built for harsh, corrosive environments. Builders Stainless stocks the Simpson Strong-Tie® Strong-Bolt® 2 wedge anchor in 304 and 316 stainless steel for coastal, marine, and high-moisture construction where carbon-steel anchors fail. Code-listed under ICC-ES ESR-3037 for cracked and uncracked concrete and IAPMO UES ER-240 for masonry.

304 vs. 316 Stainless Steel: Which Wedge Anchor Should You Use?

Choose 316 stainless steel wedge anchors for coastal, marine, and chloride-exposed environments — docks, seawalls, pools, and salt-air structures — where its added molybdenum resists pitting and crevice corrosion. Choose 304 stainless for general outdoor and high-moisture use without direct salt exposure. For St. Augustine and Florida coastal work, 316 is the standard.

Key Features

• Code-listed under IBC/IRC for cracked and uncracked concrete per ICC-ES ESR-3037
• Code-listed for masonry per IAPMO UES ER-240
• Qualified for static and seismic loading (Seismic Design Categories A–F)
• Suitable for horizontal, vertical, and overhead installations
• One-piece, wrap-around expansion clip for uniform, reliable holding capacity
• Chamfered threaded end eases nut starting; standard ANSI fractional sizes
• Available in 316 stainless from 3/8" through 3/4" diameter

How to Install a Strong-Bolt 2 Wedge Anchor

1. Drill a hole the same diameter as the anchor to the specified embedment depth using a carbide bit, then blow it clean with compressed air. (Overhead holes need not be blown clean.)
2. Thread the nut and washer on so the nut is flush with the anchor end. Place the anchor through the fixture and drive it until the washer and nut are tight against the fixture.
3. Tighten to the required installation torque.

Frequently Asked Questions

What is the difference between 304 and 316 stainless wedge anchors?

316 stainless steel contains molybdenum, giving it superior resistance to pitting and crevice corrosion from chlorides and salt water. 304 stainless offers good general corrosion resistance for outdoor use, but 316 is required for coastal, marine, and de-icing-salt environments where long-term durability matters.

Are Simpson Strong-Bolt 2 wedge anchors code-approved?

Yes. The Simpson Strong-Tie Strong-Bolt 2 is code-listed under ICC-ES ESR-3037 for cracked and uncracked concrete per IBC/IRC, and under IAPMO UES ER-240 for masonry. It is qualified for static and seismic loading in Seismic Design Categories A through F.

What size wedge anchor do I need?

Anchor diameter and embedment depth depend on the load and base material. Strong-Bolt 2 stainless anchors run from 3/8" to 3/4" in diameter and a range of lengths. Longer anchors provide deeper embedment and higher capacity. Consult ICC-ES ESR-3037 load tables for your specific application.