The Simpson LTP4Z 3 in. x 4-1/4 in. ZMAX Galvanized Lateral Tie Plate is an engineered structural connector built by Simpson to transfer shear forces for top plate-to-rim board or blocking connections. Manufactured to the highest quality standards and trusted by engineers and contractors alike, this lateral tie plate helps structures meet building code requirements while delivering reliable performance in demanding framing applications - including exterior environments and installations involving treated wood.

Key Features

• Nail holes spaced to prevent wood splitting - supports clean, damage-free installation for both single and double top-plate applications, reducing callbacks and rework on the job site
• Compatible with plywood sheathing - may be installed directly over plywood sheathing, giving framers flexibility in how and where the connector is positioned without requiring additional prep
• 20-gauge steel construction - provides a strong, consistent connector profile engineered to handle lateral shear loads in structural framing connections
• ZMAX galvanization - offers extra corrosion resistance compared to standard finishes, making this plate well-suited for exterior conditions and applications involving treated wood where moisture exposure is a concern

Why This Product

• Purpose-built for shear transfer - the LTP4Z is specifically engineered to transfer shear forces at top plate-to-rim board and top plate-to-blocking connections, addressing one of the most critical structural requirements in wall framing
• ZMAX finish for long-term durability - the enhanced galvanized coating goes beyond standard protection, making this connector a practical choice wherever treated lumber or outdoor exposure could accelerate corrosion on lesser hardware
• Versatile installation options - compatible with 8d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws, and usable over plywood sheathing, so it adapts to common framing conditions without requiring special fasteners or assemblies
• Engineered and tested by Simpson - backed by the same design, testing, and manufacturing standards that have made Simpson the go-to brand for structural connectors among builders and engineers working on both residential and commercial projects

Specifications

• Model Number: LTP4Z
• Width: 3 in.
• Height: 4-1/4 in.
• Gauge: 20
• Coating/Finish: ZMAX
• Install With: 8d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws
• Country of Origin: United States

Approved Applications

• Top plate-to-rim board connections requiring shear force transfer
• Top plate-to-blocking connections
• Single and double top-plate applications
• Exterior applications requiring enhanced corrosion resistance
• Treated-wood applications where increased protection is required
• Installation over plywood sheathing

Downloads and Resources

• View Spec Sheet

Frequently Asked Questions

What is the primary function of the Simpson LTP4Z Lateral Tie Plate?

The LTP4Z lateral tie plate transfers shear forces for top plate-to-rim board or blocking connections. It is engineered to provide a strong, reliable connection that helps structures comply with building codes and withstand lateral loads.

What type of fasteners should be used to install the LTP4Z?

The LTP4Z should be installed with 8d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws.

Why does the LTP4Z have a ZMAX finish, and when is it recommended?

The ZMAX galvanization provides extra corrosion resistance compared to standard galvanized finishes. It is specifically recommended for exterior applications and installations involving treated wood, where exposure to moisture or corrosive conditions is a concern.

Can the LTP4Z be installed over plywood sheathing?

Yes, the LTP4Z may be installed over plywood sheathing, offering installation flexibility in common wall and framing assemblies.