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H1/H1.81Z Hurricane Ties


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The H1 and H1.81Z provide a connection between the truss or rafter and the wall of the structure that helps resist wind and seismic forces. The H1.81Z hurricane tie is designed specifically for use with 1 3/4" LVL roof rafters, and the H1 is designed for nominal 2x lumber. These U-shaped hurricane ties provide faster installation than using two single-sided ties. The embossments add stiffness in crucial areas for improved performance.

Key Features

  • Holds the rafter or truss on both sides for high lateral load resistance
  • Used for a variety of connections where one member crosses another
  • Can be installed on inside or outside of wall, or both sides
  • Can be installed with flanges facing either inward or outward


  • 18 ga.


  • Galvanized (G90) or ZMAX® coating; see Corrosion Information


  • Use all specified fasteners; see General Notes.
  • Hurricane ties do not replace solid blocking.
  • When installing ties on plated trusses (on the side opposite the truss plate) do not fasten through the truss plate from behind. This can force the truss plate off of the truss and compromise truss performance.

Related Literature

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Ga. Coating/Material Packaging Qty.
H1 18 Zinc Galvanized, G90 1
H1.81Z 18 ZMAX® 1
H1Z 18 ZMAX® 1

Load Tables

Load Values with Carbon Steel Nails

    These products are available with additional corrosion protection.

    H1 approved for installation with Strong-Drive® SD Connector screws.

Model No. Ga. Fasteners (in.) DF/SP Allowable Loads Uplift with 0.131" x 1 1/2" Nails (160) SPF/HF Allowable Loads Uplift with 0.131" x 1 1/2" Nails (160)
To Rafters/ Truss To Plates Uplift Lateral (160) Uplift Lateral (160)
(160) F1 F2 (160) F1 F2
  1. See Straps and Ties General Notes.
  2. Allowable loads in the F1 direction are not intended to replace diaphragm boundary members and do not account for possible cross-grain bending of the truss or rafter members.
  3. When cross-grain bending or cross-grain tension cannot be avoided in the members, mechanical reinforcement to resist such forces shall be considered by the designer.
  4. Hurricane ties are shown installed on the outside of the wall for clarity and assume a minimum overhang of 3 1/2". Installation on the inside of the wall is acceptable. For uplift Continuous Load Path, connections in the same area (i.e., truss-to-plate connector and plate-to-stud connector) must be on same side of the wall.
  5. Refer to Simpson Strong-Tie® technical bulletin T-C-HTIEBEAR for allowable bearing enhancement loads.
  6. For simultaneous loads in more than one direction, the connector must be evaluated using either the Unity Equation or the 75% Rule, as described in Straps and Ties General Notes.
  7. Fasteners: Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
H1 18 (6) 0.131 x 1 1/2 (4) 0.131 x 2 1/2 480 510 190 455 425 440 165 370
H1.81Z 18 (6) 0.131 x 1 1/2 (4) 0.131 x 2 1/2 540 440 170 460 465 380 130 395
Load Values with Strong-Drive® SD Connector Screws
Model No. Fasteners DF/SP Allowable Loads SPF/HF Allowable Loads
To Rafters/ Truss To Plates/ Base To Studs/ Post Uplift Lateral Uplift Lateral
(160) F1 (160) F2 (160) (160) F1 (160) F2 (160)

    H1 is available with additional corrosion protection.

  1. H connector loads based on installation to double top plate.
H1 6-SD9112 4-SD9112 - 505 600 390 435 515 335

Code Reports & Compliance