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MTSM/HTSM Twist Straps


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Twist Straps for Plated Truss

This product's information may differ depending on the category of use. You are currently viewing details related to Twist Straps for Plated Truss. You can also view product information related to the categories of: Twist Straps for Masonry, Roof Truss and Rafter Connectors, Ties, and Straps for Cold-Formed Steel Construction

The MTSM and HTSM offer high-strength truss-to-masonry connections.


  • MTSM — 16 gauge; HTSM — 14 gauge


  • Galvanized; see Corrosion Information


  • Use all specified fasteners; see General Notes
  • Installs with hex-head Titen® 2 screws
  • Attach to either side of grouted concrete block with a minimum one #5 rebar horizontal
  • MTSM and HTSM can be field-bent once to a 45° angle

Related Literature

Load Tables

MTSM/HTSM Twist Straps Load Table
  1. Loads have been increased for wind or earthquake loading, with no further increase allowed. Reduce where other loads govern.
  2. Twist straps do not need to be wrapped over the truss to achieve the allowable load.
  3. Minimum edge distance for Titen® 2 screw is 1 1/2".
  4. See Titen® 2 screw information.
  5. Products shall be installed such that Titen® 2 screws are not exposed to the weather.
  6. Concrete shall have a minimum compressive strength of f'c = 2,500 psi.
  7. Grout-filled CMU (GFCMU) shall have a minimum compressive strength of f'm = 1,500 psi.
  8. Lateral loads apply when the first seven nail holes on the truss/rafter near the bend line are filled. Any other fasteners required can be installed in any open hole.
  9. Fasteners: Nail dimensions in the table are diameter by length. Titen 2 concrete/masonry screws are Simpson Strong-Tie concrete/masonry screws. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
Typical MTSM20 Installation
Typical MTSM20 Installation

Code Reports & Compliance