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Simpson Strong-Tie STHD10 Strap Tie Holdown

Brand: Simpson Strong-Tie Mfg#: STHD10
Product#: 137STHD10
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The STHD is an embedded strap-tie holdown offering high load capacity and a staggered nail pattern to help minimize splitting. The STHD incorporates many features that aid correct installation and improve performance. When installed on the forms with the StrapMate® strap holder the unique design of the STHD delivers enhanced stability before and during the pour to help prevent both parallel and perpendicular movement (relative to the form). This results in accurate positioning of the strap and reduced possibility of spalling.


  • Rim joist models accommodate up to a 17" clear span without any loss of strap nailing
  • The nailing pattern allows for nailing to the edges of double 2xs
  • The slots below the embedment line enable increased front-to-back concrete bond and help to reduce spalling
  • Strap nail slots are countersunk to provide a lower nail head profile


  • Brand: Simpson Strong-Tie
  • Depth: 4.75 - 5.25 in in
  • Work Thickness: 6 in
  • Fastener Size: 16d in
  • Load Capacity: 4120 lb Uplift lb
  • Minimum Embedment Depth: 10 in
  • Material: Steel
  • Finish: Galvanized
  • Fastener Type: (24) Nails
  • Thickness: 12 ga
  • Length: 24.625 ft
  • Width: 3 in