The Simpson CJTZ Concealed Joist Tie with Long Pins is a 12-gauge steel connector engineered for strong, hidden joist-to-beam, joist-to-header, and joist-to-post connections. Part of Simpson's broader concealed connector system - which includes the CPTZ and CBTZ - this tie supports three installation methods: with no routing of the header, post, or beam; with a routed header or post; or with a routed beam. The included long pins (1/2 in. diameter x 4-3/4 in. length) are sized for use with 5-1/8 in. glulam beams, 6x sawn lumber, or greater widths, and ZMAX galvanization provides extra corrosion resistance that suits exterior and treated-wood applications. All required dowels and screws are included, with screws driven using a hex-head driver.

Key Features

• Three installation methods supported - allows the connector to be used with no routing, a routed header or post, or a routed beam, giving builders flexibility to fit the connection detail to the project.
• Long dowel pins (1/2 in. x 4-3/4 in.) - specifically sized for 5-1/8 in. glulam beams and 6x sawn lumber or greater widths, so the hardware is properly matched to heavier structural members without modification.
• Center dowel placement in beam - positions the connection at the beam's center for balanced load transfer and cleaner structural alignment.
• Compatible only with glulam, composite lumber (PSL, LSL, and LVL), or well-dried sawn lumber - restricts use to dimensionally stable materials, reducing the risk of splitting that can occur when dowels aligned across the grain are used in lumber that shrinks excessively.
• ZMAX galvanized finish - delivers extra corrosion resistance beyond standard galvanization, making this connector a dependable choice for exterior settings and applications involving treated wood.
• Made from 12-gauge steel - provides structural rigidity appropriate for concealed joist connection applications where the hardware remains hidden within the assembly.
• All fasteners included - the tie ships complete with the required long pins and SDS screws, eliminating the need to source compatible hardware separately before installation can begin.

Why This Product

• A fully concealed connection with no compromise on strength - the CJTZ system hides the hardware inside the framing assembly, giving exposed timber and engineered lumber structures a clean finish while still delivering a code-compliant structural tie.
• Built-in installation flexibility - the three supported installation methods mean this single connector can adapt to routed or unrouted beams, headers, and posts, reducing the need for different hardware across varying site conditions.
• Engineered for corrosive environments - ZMAX galvanization is specifically designed to resist the elevated corrosive conditions created by pressure-treated lumber and exterior exposure, offering longer-term performance compared to standard coatings.
• Ready to install out of the box - all dowels and screws required for a complete installation are included, so contractors can move directly from unboxing to installation without additional hardware sourcing.

Specifications

• Manufacturer Part Number (MPN): CJT6ZL
• Product Series: CJTZ
• Material Gauge: 12-Gauge Steel
• Coating / Finish: ZMAX Galvanized
• Pin Type: Long Pins
• Pin Dimensions: 1/2 in. diameter x 4-3/4 in. length
• Compatible Beam Size: 5-1/8 in. glulam beam, 6x sawn lumber or greater widths
• Compatible Lumber Types: Glulam, PSL, LSL, LVL, or well-dried sawn lumber
• Fastener Drive Type: Hex-Head Driver (required for included screws)
• Height 1: 10 in.
• Height 2: 8-15/16 in.
• Country of Origin: United States

Approved Applications

The CJT6ZL CJTZ Concealed Joist Tie is approved for use in the following applications and conditions:

• Concealed joist-to-beam, joist-to-header, or joist-to-post connections where a hidden hardware profile is desired.
• Use with glulam beams - specifically optimized for 5-1/8 in. glulam with the included long-pin configuration.
• Use with composite engineered lumber including PSL (Parallel Strand Lumber), LSL (Laminated Strand Lumber), and LVL (Laminated Veneer