Simpson Strong-Tie HELI37700A 3/8" x 7" Type 304 Stainless Steel 7/32" or 1/4" Drill Bit Diameter Heli-Tie™ Helical Wall Tie (50 ct)
The Heli-Tie helical wall tie is a stainless-steel tie used 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.
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. Heli-Tie wall ties perform in concrete and masonry as well as wood and steel studs.
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" 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.
Patented manufacturing process results in a more uniform helix along the entire tie, allowing easier driving and better interlock with the substrate.
Model No.: HELI37700A
Coating/Material: Type 304 Stainless Steel
Size (in.): 3/8" x 7"
Drill Bit Dia. (in.): 7/32" or 1/4"
Box Qty.: 50
Carton Qty.: 400