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H1.81Z Hurricane Tie

The H1.81Z hurricane tie is designed for use with 1 3/4" LVL roof rafters to provide a strong connection to the top plate of the wall. It's ideal for connections when there are higher-load demands on the structure and provides lateral resistance in a seismic event. The 1 3/4"-wide H1.81Z connector is the first hurricane tie to be specifically sized for engineered wood. The H1.81Z installs with half the nails that are needed for two single-sided twist straps, like the H2.5A, and offers a higher lateral allowable load, making it a cost-effective and higher-performing solution to tie down an LVL roof.

Key Features

  • Wider seat to fit 1 3/4" LVL rafters
  • Can be installed on inside or outside of wall, or both sides
  • Connector embossments add stiffness in crucial areas for improved performance
  • Can be installed with flanges facing either inward or outward


  • 18 ga.


  • ZMAX®


  • Use all specified fasteners; see General Notes
  • Ties can be installed with flanges facing inward or outward
  • Hurricane ties do not replace solid blocking
  • Installation on the outside or inside of wall is acceptable

Related Literature

Product Information Table

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

Load Tables

Load Values with Carbon Steel Nails

    These products are available with additional corrosion protection.

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. 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.
  5. Using Strong-Drive SD Connector (SD9112) for 0.131” x 1 1/2”, Strong-Drive SD Connector (SD9212) for 0.131” x 2 1/2" (and longer) will get the same load as nails.
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

Code Reports & Compliance