The Simpson Strong-Tie Sleeve-All 3/8 in. x 1-7/8 in. Hex-Head Stainless-Steel Sleeve Anchor is a pre-assembled, expanding sleeve anchor engineered for reliable fastening in all types of solid base materials. Built from Type 304 stainless steel, this anchor delivers long-lasting corrosion resistance and optimal performance in demanding structural applications - from complex infrastructure projects to everyday building tasks. Its hex-head design allows for straightforward installation with a standard 1/2 in. wrench, making it a dependable choice for professionals and serious do-it-yourselfers alike.

Key Features

• Expansion anchor designed for use in solid base materials, including concrete and brick
• FM and UL approved with multiple DOT listings for verified performance and compliance
• Hex-head style for easy installation and secure tightening
• Constructed from Type 304 stainless steel for superior corrosion resistance
• Pre-assembled design simplifies installation and reduces on-site prep time
• Compatible with a 3/8 in. drill bit for precise, correctly sized hole preparation
• Requires a 1/2 in. wrench for setting and tightening
• Caution: Oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity

Specifications

• MPN: SL37178HSS
• Brand: Simpson Strong-Tie
• Size: 3/8 in. x 1-7/8 in.
• Head Type: Hex Head
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Diameter: 3/8 in.
• Bolt/Rod Diameter: 5/16 in.
• Drill Bit Size: 3/8 in.
• Wrench Size: 1/2 in.
• TPI: 18
• Packaging: Packs of 50 and Cartons of 250
• Country of Origin: China

Frequently Asked Questions

What base materials is the SL37178HSS Sleeve-All anchor suitable for?

This anchor is designed for use in all types of solid base materials, including concrete and brick. It is not intended for hollow or grouted CMU applications - those require a different anchor type from the Simpson Strong-Tie lineup.

What drill bit size should I use when installing this sleeve anchor?

A 3/8 in. drill bit is required to create the correct hole diameter for the SL37178HSS. It is important to avoid drilling an oversized hole, as this will make it difficult to set the anchor and will reduce its load capacity.

What wrench size is needed to install this hex-head anchor?

A 1/2 in. wrench is required to tighten and set the hex-head on the SL37178HSS sleeve anchor during installation.

Is this anchor approved for regulated or code-required applications?

Yes. The Simpson Strong-Tie Sleeve-All SL37178HSS is FM and UL approved and carries multiple DOT listings, making it suitable for use in applications where verified performance standards and regulatory compliance are required.

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