Simpson HELI371400A Heli-Tie 3/8 in. x 14 in. Helical Wall Tie by Simpson Strong-Tie is a Type 304 stainless steel helical wall tie engineered to anchor building façades to structural members or to stabilize brick walls. The helical design allows the tie to be driven quickly and easily into a predrilled pilot hole - or embedded into mortar joints during new construction - creating a reliable mechanical connection between a masonry façade and its backup material. As it is driven, the fins of the tie undercut the masonry to provide an expansion-free anchorage that withstands both tension and compression loads.

Key Features

• Installs quickly and easily - with the rotohammer in hammer mode, the tie installs faster than competitive products
• Provides an inconspicuous repair that preserves the appearance of the building; after installation, the tie is countersunk up to 1/2 in. below the surface, allowing the tie location to be patched
• Larger core diameter provides higher torsional capacity, resulting in less deflection due to "uncoiling" under load
• Fractionally sized anchor - no metric drill bits required
• Required drill bit diameter: 7/32 in. or 1/4 in.
• Corrosion-resistant stainless steel construction for long-lasting performance
• Performs in concrete and masonry as well as wood and steel studs
• Installed using a proprietary setting tool with an SDS-plus shank rotohammer to drive and countersink the tie

Specifications

• MPN: HELI371400A
• Brand: Simpson Strong-Tie
• Diameter: 3/8 in.
• Length: 14 in.
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Required Drill Bit Diameter: 7/32 in. or 1/4 in.
• Installation Tool: HELITOOL37A Heli-Tie fastener installation tool
• Packaging: Packs of 50 and Cartons of 200
• Country of Origin: GB

Approved Applications

• Anchoring building façades to structural members such as concrete block
• Stabilizing and reinforcing existing brick walls
• New construction - embedded directly into mortar joints
• Retrofit and repair applications in concrete and masonry substrates
• Use with wood and steel stud backup systems

Frequently Asked Questions

What tool is required to install the Heli-Tie HELI371400A?

The Heli-Tie wall tie must be installed using the HELITOOL37A Heli-Tie fastener installation tool, which features an SDS-plus shank designed for use with a rotohammer set to hammer mode. This proprietary setting tool drives and countersinks the tie during installation.

What size drill bit is needed to install this helical wall tie?

A 7/32 in. or 1/4 in. drill bit is required to create the pilot hole before driving the Heli-Tie. Because the anchor is fractionally sized, no metric drill bits are needed.

How does the Heli-Tie achieve its anchorage without expansion?

As the Heli-Tie is driven into the predrilled pilot hole, its fins undercut the surrounding masonry material. This undercutting action creates an expansion-free mechanical anchorage capable of withstanding both tension and compression loads without exerting outward pressure on the substrate.

Can the Heli-Tie HELI371400A be used in new construction as well as repairs?

Yes. In new construction, the Heli-Tie can be embedded directly into mortar joints. For retrofit and repair applications, it is driven into a predrilled pilot hole. The tie is compatible with concrete, masonry, wood studs, and steel stud backup systems, and it countersinks up to 1/2 in. below the surface so the installation location can be patched for an inconspicuous finish.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.