Simpson CJT5ZS CJTZ 12-Gauge ZMAX Galvanized Concealed Joist Tie with Short Pins by Simpson Strong-Tie is a heavy-duty concealed connector designed to create strong, hidden connections between a joist and a header, post, or beam. Manufactured from 12-gauge steel with a ZMAX galvanized finish, this joist tie delivers superior corrosion resistance for exterior and treated-wood applications while maintaining a clean, concealed appearance in the finished structure.

Key Features

• Center dowel in beam for optimal load distribution and alignment
• Dowels aligned across the grain may cause splitting if the wood shrinks excessively - follow installation guidelines carefully
• Install only in glulam, composite lumber (PSL, LSL and LVL) or well dried lumber
• Short dowel (1/2 in. x 2-3/4 in.) for use with 3-1/8 in. glulam beam, 4x sawn lumber or 3-1/2 in.-wide PSL
• Made from 12-gauge steel for reliable structural strength
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
• Part of a complete concealed connector system that includes the CPTZ and CBTZ
• Can be installed three ways: with no routing of header/post or beam, a routed header/post, or a routed beam
• Made in the United States

Specifications

• MPN: CJT5ZS
• Brand: Simpson Strong-Tie
• Series: CJTZ
• Gauge: 12
• Coating / Finish: ZMAX
• Country of Origin: United States
• Compatible Lumber Types: Glulam, PSL, LSL, LVL, or well dried lumber
• Short Dowel Dimensions: 1/2 in. diameter x 2-3/4 in. length
• Suitable Beam Widths: 3-1/8 in. glulam beam, 4x sawn lumber, or 3-1/2 in.-wide PSL

Approved Applications

• Concealed joist-to-header connections in residential and commercial framing
• Connections to glulam beams (3-1/8 in. width)
• Connections to 4x sawn lumber
• Connections to 3-1/2 in.-wide PSL (Parallel Strand Lumber)
• Exterior applications and treated-wood assemblies requiring enhanced corrosion resistance
• Use as part of the CPTZ and CBTZ concealed connector system

What's Included

• Short pins: 1/2 in. diameter x 2-3/4 in. length
• All required Strong-Drive SDS screws

Frequently Asked Questions

What installation methods are available for the CJTZ concealed joist tie?

The CJTZ can be installed three ways: with no routing of header/post or beam, with a routed header/post, or with a routed beam. This flexibility allows the connector to work in a variety of framing situations while maintaining a concealed appearance.

What type of lumber is compatible with the CJT5ZS short pin version?

The CJT5ZS with short dowels (1/2 in. x 2-3/4 in.) is designed for use with 3-1/8 in. glulam beams, 4x sawn lumber, or 3-1/2 in.-wide PSL. It should only be installed in glulam, composite lumber (PSL, LSL and LVL), or well dried lumber.

What fasteners are required, and are they included with the CJT5ZS?

The CJTZ is supplied with all dowels and screws required for installation. A hex-head driver is needed to install the included screws. No additional fasteners need to be purchased separately.

Why is ZMAX galvanization important for this connector?

ZMAX galvanization provides extra corrosion resistance compared to standard galvanized products, making the CJT5ZS suitable for exterior applications and assemblies involving treated wood where standard galvanization may not offer adequate protection.

Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.