Product Description
The Simpson CJT6ZL CJTZ 12-Gauge ZMAX Galvanized Concealed Joist Tie with Long Pins is an engineered concealed connector designed to create strong, hidden connections between a joist and a header, post, or beam. As part of the complete CJTZ concealed connector system - which also includes the CPTZ and CBTZ - this tie offers installation flexibility with three distinct methods: with no routing of the header, post, or beam; with a routed header or post; or with a routed beam. Built from 12-gauge steel and finished with ZMAX galvanization, the CJT6ZL delivers superior corrosion resistance, making it well-suited for exterior and treated-wood applications. This version includes long pins (1/2 in. diameter x 4-3/4 in. length) designed for use with 5-1/8 in. glulam beams, 6x sawn lumber, or greater widths, and comes complete with all required dowels and SDS screws for a ready-to-install solution.
Key Features
- Concealed Connector System: Part of the CJTZ system, which includes the CPTZ and CBTZ, allowing for clean, hidden structural connections.
- Three Installation Methods: Can be installed with no routing of header/post or beam, a routed header/post, or a routed beam for versatile application.
- Long Dowel Design: Includes a 1/2 in. x 4-3/4 in. long dowel for use with 5-1/8 in. glulam beams, 6x sawn lumber, or greater widths.
- Center Dowel in Beam: Dowel is centered in the beam to provide maximum beam width when used with short dowels.
- 12-Gauge Steel Construction: Heavy-duty 12-gauge steel provides structural strength and durability.
- ZMAX Galvanization: ZMAX coating offers extra corrosion resistance for exterior and treated-wood applications, outperforming standard galvanized products.
- Approved Lumber Types: Install only in glulam, composite lumber (PSL, LSL, and LVL), or well-dried lumber.
- Important Note on Dowel Alignment: Dowels aligned across the grain may cause splitting if the wood shrinks excessively - proper lumber selection is critical.
- Complete Hardware Included: Supplied with all dowels and screws required; screws require a hex-head driver.
- Made in the United States.
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)
- 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
Frequently Asked Questions
- What type of lumber is the CJT6ZL compatible with?
- The CJT6ZL is designed for use with glulam, composite lumber (PSL, LSL, and LVL), or well dried sawn lumber. The long dowel (1/2 in. diameter x 4-3/4 in. length) is specifically sized for use with 5-1/8 in. glulam beams, 6x sawn lumber, or greater widths. It should not be used in lumber that may shrink excessively, as dowels aligned across the grain can cause splitting.
- What installation methods are available for this concealed joist tie?
- The CJT6ZL supports three installation methods: with no routing of the header, post, or beam; with a routed header or post; or with a routed beam. This flexibility allows the connector to adapt to various job site conditions and framing configurations.
- Does the CJT6ZL come with all the necessary hardware for installation?
- Yes, the CJT6ZL is supplied with all dowels and screws required for installation. It includes long pins (4-3/4 in. length x 1/2 in. diameter) and the required SDS screws. A hex-head driver is needed to drive the screws.
- What makes the ZMAX finish suitable for exterior and treated-wood applications?
- The ZMAX galvanization applied to the CJT6ZL provides an extra level of corrosion resistance beyond standard galvanized coatings, making it well suited for exterior environments and applications involving treated wood where moisture and chemical exposure are a concern.
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