Simpson Strong-Tie Sleeve-All 1/2 in. x 3 in. Hex-Head Stainless-Steel Sleeve Anchor is a pre-assembled expanding sleeve anchor engineered for reliable, high-strength fastening in solid base materials such as concrete and brick. Built from Type 304 stainless steel, this anchor resists corrosion in wet, coastal, and chemically demanding environments where standard carbon-steel anchors would degrade over time. The hex-head design allows fast, torque-efficient installation with a standard 9/16 in. wrench, making it a dependable choice for infrastructure projects, structural applications, and demanding field conditions alike.

Key Features

• Type 304 stainless steel construction - provides long-term corrosion resistance in harsh, wet, or chemically aggressive environments where galvanized anchors may fall short
• Pre-assembled expanding sleeve design - simplifies installation and reduces setup time on the jobsite; no separate component assembly required before driving
• Hex-head style with 9/16 in. wrench size - enables controlled torque application with standard tools, supporting consistent, repeatable installation across multiple anchor points
• 1/2 in. drill bit diameter - matches the anchor diameter precisely, ensuring a snug fit in the base material for maximum load transfer and holding strength
• FM and UL approved with multiple DOT listings - meets verified third-party safety and performance standards, giving engineers and inspectors confidence on regulated or code-sensitive projects
• 3/8 in. bolt/rod diameter with 16 TPI threading - provides strong, secure clamping engagement with compatible hardware and structural connections
• Maximum fixture thickness of 3/4 in. - accommodates a broad range of structural plates, brackets, and mounting hardware within the specified installation range
• Anchor size of 1/2 in. x 3 in. - delivers appropriate embedment depth in solid concrete and masonry for reliable shear and tension performance

Why This Product

• Engineered for solid base materials - the expanding sleeve mechanism is specifically designed for concrete, brick, and other solid substrates, ensuring full engagement and predictable holding values where it counts most
• Third-party approved for regulated work - FM and UL approval combined with multiple DOT listings means this anchor can be specified on projects requiring documented compliance, reducing risk during inspections and project closeout
• Stainless steel durability in corrosive settings - Type 304 stainless steel is a recognized material choice for anchoring in exterior, marine-adjacent, or chemically exposed environments, reducing the need for premature replacement or remediation
• Backed by Simpson Strong-Tie engineering - Simpson Strong-Tie anchors are designed to perform in demanding structural applications, from large-scale infrastructure to contractor and DIY use, with product lines spanning a wide variety of head styles and base material types

Specifications

• Brand: Simpson Strong-Tie
• Diameter: 1/2 in.
• Bolt/Rod Diameter: 3/8 in.
• Drill Bit Diameter: 1/2 in.
• Anchor Length: 3 in.
• Head Type: Hex Head
• Wrench Size: 9/16 in.
• TPI: 16
• Max. Fixture Thickness: 3/4 in.
• Material/Finish: Type 304 Stainless Steel
• Approvals: FM and UL approved with multiple DOT listings
• Country of Origin: China

Available Pack Options

• SL50300HSS: 25 Pk
• SL50300HSS -4: 100 Pk

Frequently Asked Questions

What base materials are these sleeve anchors approved for use in?

These Sleeve-All expanding anchors are designed for use in all types of solid base materials, including concrete and brick. They are not intended for hollow or unsupported substrates - for best results, confirm your base material is fully solid before installation.

What size drill bit do I need to install the 1/2 in. x 3 in. Sleeve-All anchor?

A 1/2 in. drill bit is required. It is important to avoid drilling oversized holes - oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity. Use the specified 1/2 in. bit for proper fit and full performance.

Why is Type 304 stainless steel used instead of a standard zinc or carbon-steel finish?

Type 304 stainless steel provides significantly greater corrosion resistance compared to standard carbon-steel anchors. This makes it well suited for exterior structures, wet environments, and applications where long-term durability and resistance to rust or chemical exposure are priorities.

What certifications does this anchor carry?

The Sleeve-All hex-head stainless-steel anchor is FM and UL approved and carries multiple DOT listings. These third-party approvals confirm the anchor meets recognized safety and performance standards, which is especially important for regulated construction projects and code-compliance documentation.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.