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HPT Hurricane Tie


The HPT hurricane tie provides a key rafter-to-wall connection for retrofit applications located in Hawaii.

The HPT is specially designed and tested for single-wall homes and meets Hawaii state requirements for uplift resistance. The unique design of the HPT connects the wall to the rafter, avoiding interference from the blocking. The strengthened transition area of the HPT helps the structure resist high wind and allows the transfer of forces from the roof to the wall to help prevent damage. For applications where the blocking does not interfere, the H3Z is the recommended solution. The H3Z also meets Hawaii state requirements for uplift resistance. H3SS is stainless steel for maximum corrosion resistance.


  • ZMAX®. Also available in stainless steel. See Corrosion Information.


  • Designed to meet the Hawaii Wind Resistive Devices (WRD) required minimum of 400 lbs. of allowable uplift capacity per the state of Hawaii’s loss mitigation program
  • Installs easily with Simpson Strong-Tie® SD screws (one part per connection) OR with 10dx1 1/2 nails (two parts per connection). Either HPT connection requires an additional 1/4 x 1 1/2 Simpson Strong-Tie® Strong Drive® screw (SDS) at the trim board
  • The HPTSS must be used in pairs and only with stainless-steel nails

Related Literature

Load Tables

Load Values with Nails

   These models are approved for installation with the Strong-Drive® SD Connector screw. See the load values below.

  1. Loads have been increased 60% for earthquake or wind load, with no further increase allowed; reduce where other loads govern.
  2. In the nailed application, two HPTZ or HPTSS must be used as shown in installation images to achieve the minimum of 400 lbs required by the State of Hawaii.
  3. Parts are only shipped in equal quantities of lefts and rights.
  4. A Strong-Drive® screw is required at each connection to fasten the trim board to the wall board to transfer load to the exterior sheathing.
  5. Maximum trim board thickness for these installations is 3/4". For greater thickness use longer Strong-Drive screws, available in 2", 2 1/2" and 3" lengths.
  6. NAILS:
    N10 = 10dx1 1/2 = 0.148" dia. x 1 1/2" long, hot dip galvanized.
    N8 = 8dx1 1/2 = 0.131" dia. x 1 1/2" long, hot dip galvanized.
    SSN10 is 10dx1 1/2 stainless steel = 0.148" dia. x 1 1/2" long.
    SSN8 is 8dx1 1/2 stainless steel = 0.131" dia. x 1 1/2" long.
  7. SCREWS:
    SD10112 is Strong-Drive #10 screw x 1 1/2 = 0.164" dia. x 1 1/2" long.
    SDS25112 is Strong-Drive Screw ¼" x 1 1/2 = 0.250" dia. x 1 1/2" long.
    SDS25112SS is Strong-Drive Screw ¼" x 1 1/2 stainless steel = 0.250" dia. x 1 1/2" long.
Load Values with Strong-Drive® SD Connector Screws
Model No. Fasteners Allowable Loads (160)
To Rafters/ Truss To Wall

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

HPT 8-SD10112 8-SD10112 400

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
H3SSNo code listing: Please contact us for test data.
H3Z ESR-2613 ESR-2523 RR25718 FL10456
HPTSS No code listing. Please contact us for test data.
HPTZ No code listing. Please contact us for test data.

ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction


Part Orthographic Perspective
H3SSNone None
H3ZNone None
HPTSSNone None
HPTZ front view
HPTZ left view
HPTZ right view
HPTZ top view