The Simpson Sleeve-All Hex-Head Stainless-Steel Sleeve Anchor is a pre-assembled, expanding sleeve anchor from Simpson engineered for reliable fastening in all types of solid base materials, including concrete and brick. Built from Type 304 stainless steel, this hex-head expansion anchor is designed to install easily and perform with confidence across demanding structural applications and everyday fastening projects alike, from complex infrastructure work to hands-on do-it-yourself builds.

Key Features

• Expansion anchor for use in solid base materials - delivers a secure, load-bearing hold in concrete, brick, and similar solid substrates, giving you a dependable connection where it matters most
• FM and UL approved with multiple DOT listings - meets rigorous third-party safety and performance standards, so you can specify or install with confidence on regulated and code-sensitive projects
• Hex head with 1/2 in. wrench size - the flat-sided hex profile accepts a standard 1/2 in. wrench for straightforward tightening without specialty tooling
• Pre-assembled design - arrives ready to install right out of the pack, reducing setup time and keeping your work moving on-site
• Type 304 stainless-steel construction - provides corrosion resistance suited to demanding environments where plain steel anchors would degrade, helping extend the service life of your installation
• 3/8 in. drill bit requirement - a precisely matched hole diameter ensures the sleeve expands correctly and achieves full rated load capacity; oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity

Why This Product

• Third-party approved for high-stakes applications - FM and UL approval combined with multiple DOT listings means this sleeve anchor satisfies demanding specification requirements that many standard expansion anchors cannot meet
• Corrosion-resistant material for long-term performance - Type 304 stainless-steel construction makes this anchor a dependable choice in environments where moisture or exposure could compromise a carbon-steel fastener over time
• Versatile fit for a wide range of fastening needs - with a maximum fixture thickness of 1 1/2 in. and a 5/16 in. bolt diameter, this anchor accommodates a broad variety of structural and general-purpose installation scenarios in solid base materials
• Backed by a trusted name in structural fastening - Simpson offers this sleeve anchor as part of a broad anchoring system designed to meet virtually any need, from infrastructure projects to do-it-yourself applications, giving you a product developed with serious engineering behind it

Specifications

• MPN: SL37300HSS
• Brand: Simpson Strong-Tie
• Anchor Size: 3/8 in. x 3 in.
• Head Type: Hex Head
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Bolt/Rod Diameter: 5/16 in.
• Drill Bit Size: 3/8 in.
• Wrench Size: 1/2 in.
• TPI: 18
• Maximum Fixture Thickness: 1-1/2 in.
• Packaging: Packs of 50 and Cartons of 200

Approved Applications

• Solid base materials including concrete and brick
• Complex infrastructure projects requiring FM and UL approved anchors
• Applications requiring multiple DOT-listed anchoring solutions
• Structural and do-it-yourself fastening applications demanding reliable expansion anchors

Frequently Asked Questions

What base materials is the Simpson SL37300HSS Sleeve-All anchor designed for?

The Sleeve-All expanding anchor is designed for use in all types of solid base materials, including concrete and brick. It is not intended for use in hollow or unsupported base materials.

What drill bit size is required to install the SL37300HSS anchor?

A 3/8 in. drill bit is required to prepare the hole for proper installation of this anchor. Using an oversized hole will make it difficult to set the anchor and will reduce the anchor's load capacity.

What wrench size is needed to install the SL37300HSS hex-head anchor?

A 1/2 in. wrench is required to tighten the hex-head fastener during installation of the SL37300HSS Sleeve-All anchor.

Is the Simpson SL37300HSS anchor FM and UL approved?

Yes, the Sleeve-All SL37300HSS is FM and UL approved and carries multiple DOT listings, making it suitable for a wide range of structural and infrastructure applications where certified anchoring performance is required.

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