Simpson HELI371800A Heli-Tie 3/8 in. x 18 in. Helical Wall Tie by Simpson is a corrosion-resistant, 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 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
• Corrosion-resistant Type 304 stainless steel construction for long-lasting durability
• Performs in concrete and masonry as well as wood and steel studs
• Installed using the HELITOOL37A Heli-Tie fastener installation tool with an SDS-plus shank rotohammer to drive and countersink the tie

Specifications

• MPN: HELI371800A
• Brand: Simpson
• Diameter: 3/8 in.
• Length: 18 in.
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Required Drill Bit Diameter: 7/32 in. or 1/4 in.
• Packaging: Packs of 50 and Cartons of 200
• Country of Origin: GB

Approved Applications

• Anchoring building façades to structural members
• Stabilizing brick walls
• Retrofit repair of masonry façades via predrilled pilot holes
• New construction installation by embedding into mortar joints
• Use in concrete and masonry substrates
• Use with wood and steel stud backup systems

Frequently Asked Questions

What tool is required to install the HELI371800A Heli-Tie?

The Heli-Tie wall tie is installed using the HELITOOL37A Heli-Tie fastener installation tool with an SDS-plus shank rotohammer. The rotohammer is used in hammer mode to drive and countersink the tie into the predrilled pilot hole.

What size pilot hole does the HELI371800A require?

The HELI371800A Heli-Tie requires a predrilled pilot hole using either a 7/32 in. or 1/4 in. drill bit. No metric drill bits are needed, as this is a fractionally sized anchor.

What substrates are compatible with the Heli-Tie helical wall tie?

Heli-Tie wall ties perform in concrete and masonry as well as wood and steel studs, making them suitable for a wide range of façade anchoring and wall stabilization applications.

How does the Heli-Tie provide a discreet installation finish?

After installation, the tie is countersunk up to 1/2 in. below the surface of the masonry. This allows the tie location to be patched, providing an inconspicuous repair that preserves the appearance of the building.

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