Simpson Strong-Tie

CBTZ Concealed Beam Tie

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CBTZ, the newest addition to the concealed structural connector line, combines structural strength with invisibility. Designed to connect horizontal beams atop a vertical post, the CBTZ continues the structural load path into the foundation through the CPTZ. The simplistic cylindrical design allows installations with a common drill bit, eliminating challenging kerf cuts. The CBTZ is available in two models designed to connect beams and posts of a variety of sizes. It is part of a concealed connector system that includes the CPTZ and CJT.

More Information
Manufacturer Part Number CBTZ
Manufacturer Simpson Strong-Tie

Key Features

  • Flattened sides assist installer while using the CBTZ as a template
  • Locator tabs provide proper dimensional layout
  • Required dowel pins included
  • Orientation markings distinguish which end installs into the post and which end goes into the beam


  • 12 gauge


  • CBT — ZMAX® coating; the 1/2"-diameter drift dowels are mechanically galvanized in accordance with ASTM B695, Class 55


  • Use all specified fasteners; see General Notes
  • 1/2" dowels included
  • CBT2Z requires a minimum 6"-deep nominal beam
  • For step-by-step installation instructions, see technical bulletin CBTZ Concealed Beam Tie Installation Instructions (T-C-CBTZINS) or view our video in the image gallery