The Simpson Heli-Tie Helical Wall Tie is a Type 304 stainless steel anchor tie engineered to secure building facades to structural members and to stabilize brick walls. Its helical design allows the tie to be driven quickly and easily into a predrilled pilot hole - or embedded directly into mortar joints during new construction - forming a reliable mechanical connection between a masonry facade and its backup material. As the tie is driven, its fins undercut the masonry to deliver expansion-free anchorage capable of withstanding both tension and compression loads. Compatible with concrete, masonry, wood stud, and steel stud backup systems, the Heli-Tie wall tie is installed using the HELITOOL37A Heli-Tie fastener installation tool with an SDS-plus shank rotohammer in hammer mode.

Key Features

• Rotohammer-driven helical installation - with the rotohammer set to hammer mode, the tie installs faster than competitive products, reducing labor time on both new construction and retrofit projects
• Countersinks up to 1/2 in. below the surface - the recessed final position allows the tie location to be patched, providing an inconspicuous repair that preserves the appearance of the building
• Larger core diameter - provides higher torsional capacity, resulting in less deflection due to "uncoiling" under load and a more structurally dependable connection
• Fractionally sized anchor requiring a 7/32 in. or 1/4 in. drill bit - no metric drill bits needed, making it easier to work with standard tool sets already on the job site
• Type 304 stainless steel construction - delivers long-term corrosion resistance in exterior masonry and facade applications where moisture exposure is a concern
• Performs in multiple backup materials - installs into concrete, masonry, wood studs, and steel studs, giving contractors flexibility across a wide range of wall assembly types

Why This Product

• Engineered for speed without sacrificing anchorage quality - the helical design drives and countersinks in a single operation using a standard rotohammer in hammer mode, cutting installation time compared to alternative wall tie systems
• Expansion-free anchorage protects surrounding masonry - as the tie is driven, its fins mechanically undercut the masonry rather than expanding outward, reducing the risk of stress cracking in the facade - a critical advantage in repair and retrofit work
• Invisible after installation - because the tie countersinks up to 1/2 in. below the surface and the location can be patched, it is well suited for heritage buildings, historically sensitive facades, and any project where maintaining exterior appearance matters
• Versatile across new construction and repair applications - the Heli-Tie wall tie can be embedded into mortar joints during new builds or driven into predrilled holes for retrofit anchoring, making it a single solution for multiple masonry tie scenarios

Specifications

• MPN: HELI37700A
• Brand: Simpson Strong-Tie
• Diameter: 3/8 in.
• Length: 7 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 400
• Country of Origin: United Kingdom

Approved Applications

• Anchoring building façades to structural members
• Stabilizing existing brick walls
• Connecting masonry façades to concrete and masonry backup materials
• Connecting masonry façades to wood stud backup systems
• Connecting masonry façades to steel stud backup systems
• New construction mortar joint embedding applications
• Retrofit and repair applications requiring inconspicuous, patchable installation

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