The Simpson Heli-Tie 3/8 in. x 14 in. Helical Wall Tie is a Type 304 stainless steel helical tie engineered to anchor building facades to structural members or to stabilize and reinforce brick walls. The helical design allows the tie to be driven quickly 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 it is driven, the fins of the tie undercut the surrounding masonry to deliver an expansion-free anchorage capable of withstanding both tension and compression loads. Compatible with concrete, masonry, wood, and steel stud backup systems, this helical wall tie suits both new construction and retrofit or repair applications.

Key Features

• Faster installation with a rotohammer in hammer mode - the tie drives more quickly than competitive products, reducing labor time on the job site.
• Countersunk up to 1/2 in. below the surface after installation - the tie location can be patched for an inconspicuous repair that preserves the finished appearance of the building facade.
• Larger core diameter for higher torsional capacity - less deflection occurs due to "uncoiling" under load, resulting in a more stable and dependable connection over time.
• Fractionally sized at 3/8 in. diameter, requiring a 7/32 in. or 1/4 in. drill bit - no metric drill bits are needed, simplifying tool requirements for installers working in the field.
• Type 304 stainless steel construction - provides long-term corrosion resistance, making the tie suitable for exterior masonry and facade applications where moisture exposure is a concern.
• Installed using the HELITOOL37A Heli-Tie fastener installation tool with an SDS-plus shank rotohammer - the proprietary setting tool drives and countersinks the tie in a single controlled operation.

Why This Product

• Expansion-free anchorage through undercutting - unlike traditional expansion anchors, the Heli-Tie's fins mechanically undercut the masonry as the tie is driven, creating a secure hold that does not rely on outward pressure and will not stress or crack surrounding material.
• Versatile across multiple substrate types - the Heli-Tie performs in concrete and masonry as well as wood and steel stud backup systems, making it a single solution adaptable to a wide range of facade anchoring and wall stabilization projects.
• Retrofit-friendly design that leaves no visible trace - the tie countersinks below the surface and can be patched flush, allowing repair and reinforcement work to be completed without altering the appearance of the existing structure.
• No metric tooling required on a fractionally sized anchor - the 3/8 in. diameter tie accepts standard fractional drill bits, keeping the installation straightforward and eliminating the need for specialized or hard-to-source metric equipment.

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: United Kingdom

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

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