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MTSM/HTSM Twist Straps


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Roof Truss and Rafter Connectors, Ties, and Straps

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

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.
  • May be attached to either side of a grouted block wall. A minimum of one #5 horizontal rebar shall be installed in the top course of this wall.

Related Literature

Load Tables

  1. All straps have additional fastener holes.
  2. Twist straps do not have to be wrapped over the truss to achieve the load.
  3. Minimum edge distance in concrete block for Titen® 2 screws is 1 1/2".
  4. Straps can be installed on the inside face of the wall.
  5. Min. f'm = 1,500 psi and f'c = 2,500 psi.
  6. See Fastening Systems for more information on Simpson Strong-Tie fasteners.

Code Reports & Compliance