Simpson HELI371100A Heli-Tie 3/8 in. x 11 in. Helical Wall Tie by Simpson 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 in new construction - to provide 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 will withstand tension and compression loads. Heli-Tie wall ties perform in concrete and masonry as well as wood and steel studs.

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
• The Heli-Tie wall tie is installed into a predrilled hole using a proprietary setting tool with an SDS-plus shank rotohammer to drive and countersink the tie
• Corrosion-resistant stainless steel construction for long-lasting service life
• Compatible with concrete, masonry, wood, and steel stud backup materials

Specifications

• MPN: HELI371100A
• Brand: Simpson Strong-Tie
• Diameter: 3/8 in.
• Length: 11 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: United Kingdom
• Installation Tool: Install with HELITOOL37A Heli-Tie fastener installation tool

Approved Applications

• Anchoring building façades to structural members
• Stabilizing brick walls
• Repairing and reinforcing existing masonry walls
• New construction - embedding into mortar joints
• Connecting masonry façades to concrete, masonry, wood stud, and steel stud backup materials

Frequently Asked Questions

What drill bit size is required to install the HELI371100A Heli-Tie?

The HELI371100A Heli-Tie requires a predrilled pilot hole using a 7/32 in. or 1/4 in. drill bit prior to installation.

What tool is used to install the Heli-Tie wall tie?

The Heli-Tie wall tie is installed into a predrilled hole using a proprietary setting tool with an SDS-plus shank rotohammer - specifically the HELITOOL37A Heli-Tie fastener installation tool - to drive and countersink the tie.

How does the Heli-Tie provide anchorage without expansion forces?

As the tie is driven, the fins of the helical tie undercut the masonry to provide an expansion-free anchorage that will withstand tension and compression loads, eliminating the stress associated with traditional expansion anchors.

Will the installed Heli-Tie be visible after installation?

No. After installation, the tie is countersunk up to 1/2 in. below the surface, allowing the tie location to be patched. This provides 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.