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Heli-Tie™ Helical Wall Tie 

Crack Repair Accessories

This product's information may differ depending on the category of use. You are currently viewing details related to Crack Repair Accessories. You can also view product information related to the category: Helical Ties

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.

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" 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.

Material

  • Type 304 stainless steel (Type 316 available by special order — contact Simpson Strong-Tie for details)

Installation

  • Drill pilot hole through the façade material and into the backup material to the specified embedment depth + 1" using appropriate drill bit(s) in the chart below. Drill should be in rotation-only mode when drilling into soft masonry or into hollow backing material.
  • Position drive end of the Heli-Tie™ fastener in the installation tool and insert the tie into the pilot hole.
  • With the SDS-plus rotohammer in hammer mode, drive the tie until the tip of the installation tool enters the exterior surface of the masonry and countersinks the tie below the surface. Patch the hole in the façade with a matching masonry mortar.

Test Criteria

  • CSA A370

Related Literature

Anchoring, Fastening, Restoration and Strengthening Systems for Concrete and Masonry
C-A-2023
A catalog of products belonging to our anchoring, fastening, restoration and strengthening systems for concrete and masonry.
Catalog
Sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería
C-A-2023SP
Un catálogo completo de productos e información para los sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería.
Catalog
2022–2025 Product Guide — Anchoring, Fastening Systems and Restoration Solutions for Concrete and Masonry
S-A-PG22
A product guide providing information on Simpson Strong-Tie® anchoring adhesives, mechanical anchors, direct fastening, carbide drill bits and restoration products for concrete and masonry.
Product Guide
2022–2025 Guía de productos — Sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería
S-A-PG22SP
Guía de productos para Simpson Strong-Tie® con información sobre anclajes adhesivos, anclajes mecánicos, sujeción directa, brocas de carburo y productos para restauración para concreto y mampostería.
Product Guide
Heli-Tie™ Helical Wall and Stitching Ties
F-R-HELITIE24-R
A flier providing product and installation information on the Heli-Tie™ helical wall and stitching ties.
Flier
Heli-Tie™ helical ties stitch and stabilize unreinforced masonry walls at Quebec pulp and paper mill
CS-R-RAYONIER24
A concrete products case study highlighting the repair and stabilization of 100-year-old URM walls using Simpson Strong-Tie® Heli-Tie™ helical wall and stitching ties.
Case Study
Specification for Masonry Helical Anchors (DOC)
T-R-HELISPEC24
Suggested CSI format specification for Simpson Strong-Tie® Heli-Tie helical wall tie and stitching anchors for masonry
Technical Bulletin
Specification for Masonry Helical Anchors (PDF)
T-R-HELISPEC24
Suggested CSI format specification for Simpson Strong-Tie® Heli-Tie helical wall tie and stitching anchors for masonry
Technical Bulletin
Safety Data Sheet for Mechanical Anchors
SDS-MechAnchors-NA-ENG-0520
Intended to provide information for use in workplace chemical management; information such as physical properties; hazards; protective measures; precautions for handling, storing, and transportation.
SDS
Ficha de Datos de Seguridad para Anclas Mecánicas
SDS-MechAnchors-NA-ES
Diseñado para dar información útil en la gestión de químicos en el lugar de trabajo; p.ej. propiedades físicas; riesgos; medidas de protección; precauciones para manejo, almacenamiento y transporte.
SDS
Fiche de Données de Sécurité pour Ancrages Mécaniques
SDS-MechAnchors-NA-FRCA
Prévu pour fournir de l’information sur la gestion des produits chimiques au travail comme propriétés physiques, dangers, mesures de protection et précautions de manipulation, stockage et transport.
SDS

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Coating/Material Size (in.) Drill Bit Dia. (in.) Box Qty. Carton Qty.
Footnotes

  1. Special-order lengths are also available; contact Simpson Strong-Tie.
HELI371000A Type 304 Stainless Steel 3/8 x 10 7/32 or 1/4 50 200
HELI371100A Type 304 Stainless Steel 3/8 x 11 7/32 or 1/4 50 200
HELI371200A Type 304 Stainless Steel 3/8 x 12 7/32 or 1/4 50 200
HELI371400A Type 304 Stainless Steel 3/8 x 14 7/32 or 1/4 50 200
HELI371600A Type 304 Stainless Steel 3/8 x 16 7/32 or 1/4 50 200
HELI371800A Type 304 Stainless Steel 3/8 x 18 7/32 or 1/4 50 200
HELI372000A Type 304 Stainless Steel 3/8 x 20 7/32 or 1/4 50 200
HELI37700A Type 304 Stainless Steel 3/8 x 7 7/32 or 1/4 50 400
HELI37800A Type 304 Stainless Steel 3/8 x 8 7/32 or 1/4 50 400
HELI37900A Type 304 Stainless Steel 3/8 x 9 7/32 or 1/4 50 400

Guide Tension Loads in Various Base Materials

Size in. (mm) Base Material Anchor Location Drill Bit Dia. in. Min. Embed. Depth in. (mm) Tension Load1
Ultimate2 lb. (kN) Load at Max. Permitted Displ.3 lb. (kN) Standard Deviation lb. (kN)
3/8 (9.0) Solid Brick4 Mortar Bed Joint 7/32 3 (76) 570 (2.5) 240 (1.1) 79 (0.4)
1/4 365 (1.6) 130 (0.6) 46 (0.2)
Brick Face 7/32 1,310 (5.8) 565 (2.5) 84 (0.4)
1/4 815 (3.6) 350 (1.6) 60 (0.3)
Hollow Brick5 Mortar Bed Joint 7/32 530 (2.4) 285 (1.3) 79 (0.4)
Brick Face 7/32 775 (3.4) 405 (1.8) 47 (0.2)
1/4 510 (2.3) 185 (0.8) 20 (0.1)
Grout-Filled CMU6 Center of Face Shell 7/32 2 3/4 (70) 1,170 (5.2) 405 (1.8) 79 (0.4)
1/4 830 (3.7) 350 (1.6) 60 (0.3)
Web 7/32 1,160 (5.2) 440 (2.0) 56 (0.2)
1/4 810 (3.6) 330 (1.5) 100 (0.4)
Mortar Bed Joint 7/32 720 (3.2) 320 (1.4) 71 (0.3)
1/4 530 (2.4) 205 (0.9) 58 (0.3)
Hollow CMU7 Center of Face Shell 7/32 790 (3.5) 305 (1.4) 56 (0.2)
1/4 505 (2.2) 255 (1.1) 46 (0.2)
Web 7/32 1,200 (5.3) 445 (2.0) 50 (0.2)
1/4 675 (3.0) 385 (1.7) 96 (0.4)
Normal-Weight Concrete8 — 7/32 1 3/4 (44) 880 (3.9) 410 (1.8) 76 (0.3)
1/4 2 3/4 (70) 990 (4.4) 380 (1.7) 96 (0.4)
2x4 Wood Stud9,11 Center of Thin Edge 7/32 2 3/4 (70) 590 (2.6) 370 (1.6) 24 (0.1)
1/4 450 (2.0) 260 (1.2) 6 (0.0)
Metal Stud10,11 Center of Flange 7/32 1 (25) 200 (0.9) 120 (0.5) 8 (0.0)
1/4 155 (0.7) 95 (0.4) 2 (0.0)
  1. Tabulated loads are guide values based on laboratory testing. Onsite testing shall be performed for verification of capacity since base material quality can vary widely.
  2. Ultimate load is average load at failure of the base material. Heli-Tie fastener average ultimate steel strength is 3,885 lb. and does not govern.
  3. Load at maximum permitted displacement is average load at displacement of 0.157" (4 mm). The designer shall apply a suitable factor of safety to these numbers to derive allowable service loads.
  4. Solid brick values for nominal 4"-wide solid brick conforming to ASTM C62/C216, Grade SW. Type N mortar is prepared in accordance with IBC® Section 2103.2.
  5. Hollow brick values for nominal 4"-wide hollow brick conforming to ASTM C216/C652, Grade SW, Type HBS, Class H40V. Mortar is prepared in accordance with IBC Section 2103.2.
  6. Grout-filled CMU values for normal 8"-wide lightweight, medium-weight and normal-weight concrete masonry units. The masonry units must be fully grouted. Values for normal 8"-wide concrete masonry units (CMU) with a minimum specified compressive strength of masonry, f'm, at 28 days is 1,500 psi.
  7. Hollow CMU values for 8"-wide lightweight, medium-weight and normal-weight concrete masonry units.
  8. Normal-weight concrete values for concrete with minimum specified compressive strength of 2,500 psi.
  9. 2x4 wood stud values for nominal 2x4 sprucepine-fir.
  10. Metal stud values for 20-gauge C-shape metal stud.
  11. For retrofits, due to difficulty of locating center of 2x4 or metal stud flange, install Heli-Tie from interior of building.
  12. For new construction, anchor one end of tie into backup material. Embed other end into veneer mortar joint.

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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