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Product Details
H1.81Z
H1.81Z
H1.81Z Illustration
H1.81Z Illustration
H2.5A / H2.5ASS
H2.5A / H2.5ASS
H2.5A / H2.5ASS Illustration
H2.5A / H2.5ASS Illustration
H3 / H3SS
H3 / H3SS
H3 / H3SS Illustration
H3 / H3SS Illustration
H6
H6
H6 Illustration
H6 Illustration

Hurricane Ties provide a positive connection between the truss/rafter and the wall of the structure to resist wind and seismic forces. These ties connect both solid-sawn and engineered timber across a wide range of applications. Some hurricane tie models are available with additional corrosion resistance for exterior and treated-timber applications.

The H1.81Z Hurricane Tie is designed for use with 45mm structural timber framing to provide a stronger connection between the top plate of the wall and rafter. It's ideal for connections when there are higher-load demands on the structure, like a heavy snow load, and provides lateral resistance in a seismic event. It also suits for bearer to joist connection in flooring and deck framing applications.

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 a rafter roof.

The H2.5A connects the truss/rafter to the top plate and is also suitable for joist to bearer connections. It is available in galvanised and stainless steel for extra corrosion protection.

The H3 connects the truss/rafter to the top plate and is available in galvanised and stainless steel for extra corrosion protection.

The H6 wraps from the stud up and over the top plate for a high‑strength connection. It can also be used as a stud‑to‑band‑joist connection.

 

Material
  • Carbon Steel 1.3mm thick: H1.81Z; H2.5A; H2.5ASS; H3; H3SS
  • Carbon Steel 1.6mm thick: H6
Finish
  • ZMAX® Galvanised: H1.81Z
  • Z275 Galvanised: H2.5A; H3; H6
  • 316 Stainless Steel: H2.5ASS; H3SS
Features & Benefits
  • Resists high winds and seismic forces
  • Provides a secure hold to help weather storms
  • H1.81 has a wider seat to fit 45 mm structural timber framing
  • Engineered swages for extra strength and to minimise deflections
  • Install in pairs on either side of the rafter/truss/joist to provide resistance to uplift and lateral forces
  • May be used for general tie purposes, strongback attachments, and as all-purpose ties where one member crosses another
  • H2.5A & H3 are available in 316 Stainless Steel for extra corrosion protection
  • Install with Simpson Strong-Tie 8d common nails or Strong-Drive SD screws
Installation
  • Use all specified fasteners 
  • Simpson Strong-Tie Stainless Steel connectors require stainless steel fasteners
  • Ties can be installed with flanges facing inward or outward
  • Hurricane ties do not replace solid blocking
Model No. Table

Model No.

Fasteners
(No. — Length x Dia., mm)

Design Capacity (kN)

AU

Design Capacity (kN)

NZ

Rafter/Joist

Top Plates/Bearer

Stud

Uplift
k1 = 1.14

F1
k1 = 1.14

F2
k1 = 1.14

Uplift
k1 = 1.0

F1
k1 = 1.0

F2
k1 = 1.0

H1.81Z

6 – 38 x 3.75

4 – 38 x 3.75

2.25

2.23

1.29

1.86

1.84

1.07

H2.5A

5 – 38 x 3.32

5 – 38 x 3.32

2.35

0.49

0.48

2.32

0.49

0.48

H2.5ASS

5 – 38 x 3.32

5 – 38 x 3.32

1.88

0.34

0.34

1.85

0.34

0.34

H3

4 – 38 x 3.32

4 – 38 x 3.32

1.98

0.31

0.76

1.86

0.29

0.76

H3SS

4 – 38 x 3.32

4 – 38 x 3.32

1.34

0.31

0.76

1.26

0.29

0.76

H6

8 – 38 x 3.32

8 – 38 x 3.32

3.47

3.47

  1. Design Capacity is the lesser of (1) the Characteristic Capacity multiplied by the Australian Capacity Factor, or the NZ Strength Reduction Factor (φ), and applicable the k modification factors following AS 1720.1 and NZS 3603 and (2) the Serviceability Capacity which is the load at 3.2mm joint slip. Design Capacity is the minimum of test data and structural joint calculation.
  2. For Australia, the Capacity Factor (φ) is 0.85 for nails and screws for structural joints in a Category 1 application. Reduce tabulated values where other Category applications govern. For New Zealand, The Capacity Factor (φ) is 0.8 for nails.
  3. Duration of Load Factor (k1) is as shown. Reduce Duration of Load Factor (k1) where applicable. Capacities may not be increased.
  4. Timber species for joint design is seasoned Radiata Pine, which is Australia Joint Group JD4 per AS 1720.1 Table H2.4.
  5. Allowable loads in the F1 direction are not intended to replace diaphragm boundary members or cross-grain bending of the truss or rafter members
  6. When cross-grain tension cannot be avoided in the members, mechanical reinforcement to resist such forces may be considered
  7. H1.81Z shown on the outside of wall assumes a min. overhang of 90mm. Installation on the inside of wall is acceptable with detailing for the uplift continuous load path by Designer.
  8. For parts installed on the outside of wall where only three plate fasteners can be accessed, reduce table loads by 0.75 for single part and 0.875 for two-part installations.
Brochures & Catalogues
Installation Guides
Technical Data & Docs
CAD Library
Masterspec
Alternative Products

Alternative Products

TSP

The TSP Stud Plate Tie connects from one side and is suitable for single bottom plates and double top plates. The TSP adds strength and rigidity to the critical stud-plate connection.

 

SP4 Stud Plate Tie

The SP4 Stud Plate Tie is a versatile solution for connecting the stud to the top and bottom wall plates. The SP4 wraps around the plate, requires no nailing into the plate and is suitable for single bottom plates and double top plates.

Inspiration
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Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Structural Connections

 

Unmatched Quality from the Truss to the Foundation

With nearly 60 years of field and R&D experience, Simpson Strong-Tie® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Timber Connectors NZS 3604 Catalogue.

Timber Connectors

From testing to service to availability, everything we do is engineered to ensure your project's success. With every product, you know you are getting the quality, value, service and on-time delivery that we have built our reputation on for the past 60 years.

From straps and ties to joist hangers and much more, Simpson Strong-Tie® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection. Download the Timber Construction Connectors Catalogue.

Steel Frame Connectors

From fully tested and engineered connectors and clips Simpson Strong-Tie® provides comprehensive structural solutions for cold-formed steel construction. From steel-to-steel connections to full-scale lateral solutions and curtain wall connectors, we remain committed to developing new technology that helps to advance the cold-formed steel industry.

Find out how Simpson Strong-Tie timber connectors can help you build the right way every day. Download the Cold-Fromed Steel Construction Connectors Catalogue.