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SKU: STB2-50812S4F20
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Simpson 1/2" x 8-1/2" Strong Bolt 2 Fully Assembled Wedge Anchor - 304 Stainless Steel, Pkg 20

Diameters

1/4" 3/8" 1/2" 5/8" 3/4"

Lengths

1-3/4" 2-1/4" 2-3/4" 3" 3-1/4" 3-1/2" 3-3/4" 4-1/4" 4-1/2" 4-3/4" 5" 5-1/2" 6" 6-1/4" 7" 8-1/2" 10"
$15799
Ships today when you order in the next 1 hour and 4 minutes

Description

Simpson Strong-Tie Strong-Bolt 2 Wedge Anchors in 304 stainless steel deliver dependable anchoring strength in environments where corrosion resistance is critical. Designed for cracked and uncracked concrete, these anchors are code-listed under ICC-ES ESR-3037 and suitable for seismic, wind, and static loading conditions.

Engineered with a patented thread design and pre-assembled with a stainless steel washer and nut, Strong-Bolt 2 anchors provide consistent expansion, easy installation, and long-term reliability for a wide range of applications.

Key Features

  • 304 Stainless Steel Construction: Excellent resistance to rust and corrosion in outdoor, damp, or mildly aggressive environments.
  • ICC-ES Code Listed (ESR-3037): Approved for use in cracked and uncracked concrete, seismic zones, and wind-load applications.
  • Pre-Assembled Convenience: Includes wedge anchor, stainless steel nut, and washer for quick, job-site ready installation.
  • Torque-Controlled Expansion: Engineered for consistent holding power in structural and non-structural anchoring.
  • Stamped Head Markings: Clear identification for easy inspection and code compliance.

Common Applications

  • Exterior structural steel connections
  • Light poles, signage, and guardrails
  • Stainless steel framing or architectural supports
  • Outdoor mechanical, electrical, and plumbing systems
  • Coastal, food processing, or damp industrial environments

Installation Tips

  1. Drill a hole into concrete the same diameter as the anchor using a carbide-tipped drill bit.
  2. Clean out the hole to remove all dust and debris for proper expansion.
  3. Insert the anchor through your fixture and into the hole until the washer sits flush with the surface.
  4. Tighten the nut to engage the expansion clip and secure the anchor in place—refer to torque values by diameter.

California Residents: WARNING

Mechanical Anchors from Simpson Strong-Tie — Innovative and Trusted

Specifications
Diameter: 1/2"
Length: 8-1/2"
Thread Length: 6"
Fixture Hole Size: 9/16"
Drill Bit Size: 1/2"
Wrench Size: 3/4"
Material: 304 Stainless Steel
Installation Torque: 45 ft. lbf.
Manufacturer Name: Simpson Strong-Tie
Quantity: 20

Reviews
(2)

Customer Reviews

Based on 2 reviews
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(1)
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(1)
0%
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(0)
C
Corban Parker
Strapping

Worked well for SS strapping attachment to Concrete foundation. The order arrived earlier than stated which was a nice bonus. Would buy again.

M
Mark C.
Joists Hangers

I checked several places and Fasteners had the best prices and extremely fast order processing and shipping. I have used again and again.

Payment & Security

Payment methods

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
  • Wedge anchor installed in wooden beams on a concrete floor

    Wedge Anchors - For Your Concrete Anchor Needs

    Because they provide strong, permanent holds once installed, wedge anchors are a go-to choice in both commercial construction and industrial settings. Once seated properly in the concrete wedge anchors provide a strong and permanent hold.

  • Metal base plate with wedge anchors on a concrete surface

    Versatile Applications, Endless Possibilities

    Offering a reliable design - featuring a threaded stud, expansion clip, and nut - making them suitable for a wide range of applications, from structural steel connections and machinery anchoring to shelving, racking and safety barriers.

  • Hand holding a wedge anchor against a black background

    Made of High Quality and Durable Materials

    Concrete wedge anchors come in various materials, such as zinc-plated steel, stainless steel, hot-dip galvanized and mechanically galvanized versions, allowing for use in different environments, including those with moisture or corrosive exposure.

Broad selection, fast delivery

Our footprint

Our nationwide network of distribution facilities offers more product selection and faster delivery times. So far we’ve made remarkable progress in our expansion efforts, effectively doubling our capacity by adding a new 47,000 sq. ft. warehouse in Simpsonville, South Carolina, in addition to our existing 60,000 sq. ft. facility in Urbana, Iowa.

Broad selection, fast delivery

Our experience

We pride ourselves on delivering a user-friendly, high quality experience online and over the phone. Our knowledgeable team of experts is readily available via phone to assist with product questions and custom pricing inquiries. We’re available Monday thru Friday from 7:00 AM – 5:00 PM CST. We look forward to supporting you on your next job.

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