H/TSP Seismic and Hurricane Ties


Simpson Strong-Tie® hurricane ties provide a positive connection between truss/rafter and the wall of the structure to resist wind and seismic forces. New additions to the line provide even more options.

  • H10AR – The heavy-duty design of the H10A available with a 2″ wide throat to accommodate rough lumber
  • H10A-2 – The H10A design with a 3″ throat for double 2x members
  • H2ASS, H2.5ASS and H10ASS – Popular ties now available in stainless steel.

The H16 series has a presloped seat of 5/12 for double trusses.

The presloped 5/12 seat of the H16 provides for a tight fit and reduced deflection. The strap length provides for various truss height up to a maximum of 13 1⁄2″ (H16 series). Minimum heel height for H16 series is 4″.

The HGA10 attaches to gable trusses and provides good lateral wind resistance. The HS24 attaches the bottom chord of a truss or rafter at pitches from 0/12 to 4/12 to double 2×4 top plates. Double shear nailing allows for higher lateral resistance.

Material: See tables.

Finish: Galvanized. H7Z and H11Z—ZMAX® coating. Some models available in stainless steel or ZMAX® coating; See Corrosion Information.


  • Use all specified fasteners. See General Notes.
  • Use hot-dip galvanized (HDG) nails with ZMAX and HDG connector products. Use Type 316 stainless-steel nails with our stainless-steel connector products.
  • H1 can be installed with flanges facing inwards (reverse of H1 drawing).
  • H2.5T, H3, H4, H5 and H6 ties are only shipped in equal quantities of rights and lefts (right versions shown below).
  • 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.
  • H10A optional nailing to connect shear blocking, use 8d nails. Slots allow maximum field bending up to a pitch of 6:12, use H10A sloped loads for field bent installation.
  • HGA10KT: sold as a kit with (10) HGA10 connectors. Simpson Strong-Tie® Strong-Drive® SDS Heavy-Duty Connector screws are included.
  • HS24 requires slant nailing only when bottom chord of truss or rafter has no slope.
  1. Loads have been increased for wind or earthquake loading with no further increase allowed; reduce where other loads govern.
  2. Allowable loads are for one anchor. A minimum rafter thickness of 2 1/2″ must be used when framing anchors are installed on each side of the joist and on the same side of the plate (exception: connectors installed such that nails on opposite sides don’t interfere).
  3. Allowable DF/SP uplift load for stud to bottom plate installation (see detail 15) is 400 lbs. (H2.5); 390 lbs. (H2.5A); 360 lbs. (H4) and 310 lbs. (H8). For SPF/HF values multiply these values by 0.86.
  4. Allowable loads in the F1 direction are not intended to replace diaphragm boundary members or prevent cross grain bending of the truss or rafter members.
  5. When cross-grain bending or cross-grain tension cannot be avoided in the members, mechanical reinforcement to resist such forces may be considered.
  6. 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 (see General Instructions for the Installer notes u). 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. See T-HTIEBEARING for more information.
  7. Southern Pine allowable uplift loads for H10A = 1340 lbs. and for H14 = 1465 lbs.
  8. Refer to technical bulletin T-HTIEBEARING for selected hurricane ties allowable bearing enhancement loads.
  9. H10S can have the stud offset a maximum of 1″ from rafter (center to center) for a reduced uplift of 890 lbs. (DF/SP), and 765 lbs. (SPF).
  10. H10S nails to plates are optional for uplift but required for lateral loads.
  11. Some load values for the stainless-steel connectors shown here are lower than those for the carbon-steel versions. Ongoing test programs have shown this to also be the case with other stainless-steel connectors in the product line that are installed with nails. Visit www.strongtie.com/corrosion for updated information.
  12. NAILS: 16dx2 1/2 = 0.162″ dia. x 2 1/2″ long, 10d = 0.148″ dia. x 3″ long, 10dx1 1/2 = 0.148″ dia. x 1 1/2″ long, 8d = 0.131″ dia. x 2 1/2″ long, 8dx1 1/2 = 0.131″ dia. x 1 1/2″ long. See other nail sizes and information.
  13. SCREWS: Strong-Drive® SD #9×1 1/2″ (model SD9112) = 0.131″ dia. x 1 1/2″ long (for the models marked with the orange flag only). See load values below.
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