The Simpson SP2Z 3-1/2 in. x 6-5/8 in. ZMAX Galvanized Stud Plate Tie by Simpson is purpose-built for double-top-plate-to-stud connections in wood-frame construction, delivering reliable uplift resistance where wind and seismic forces put structural connections under the greatest stress. Formed from 20-gauge steel with angled holes that draw the stud and plate together positively, this connector is equally at home in new construction and retrofit projects, and its ZMAX galvanized finish makes it a dependable choice wherever moisture or treated lumber accelerates corrosion in standard hardware.

Key Features

• Embossments that strengthen the stud-to-plate connection - raised embossments add rigidity to the tie, increasing the load the joint can carry without adding bulk or requiring a heavier gauge.
• Engineered to resist wind and seismic forces - the SP2Z is specifically designed for uplift resistance, helping wood-frame structures meet code requirements in high-wind and earthquake-prone regions.
• Usable before or after framing, including retrofit applications - installers can add or replace ties in an existing structure without tearing out surrounding work, saving time and labor on upgrade projects.
• Sized for nominal 2x stud framing - the 3-1/2 in. x 6-5/8 in. profile is matched to standard lumber dimensions, ensuring a snug, properly aligned fit at the double-top-plate-to-stud connection.
• Made from 20-gauge steel - a well-established structural gauge that balances strength with the flexibility needed to seat the connector cleanly against framing members.
• ZMAX galvanization for extra corrosion resistance - the heavier ZMAX coating outperforms standard galvanized finishes in exterior environments and alongside treated lumber where preservative chemicals can attack thinner zinc coatings over time.

Why This Product

• Built for the toughest connection points in a wall assembly - the SP2Z targets the double-top-plate-to-stud joint, the location most vulnerable to uplift, making it the right structural solution when framing must hold against high-wind or seismic loading.
• ZMAX coating extends service life in demanding environments - where treated-wood chemicals or exterior moisture would compromise a standard galvanized tie, the enhanced ZMAX finish keeps the connector performing for the long term without sacrificing code compliance.
• Retrofit-ready design reduces project complexity - because the SP2Z can be installed after initial framing is complete, contractors and homeowners can strengthen existing structures without costly disassembly, making seismic and wind upgrades far more practical.
• Angled nail holes create a positive mechanical connection - the hole pattern drives fasteners at an angle through the tie and into both the stud and plate, locking the assembly together in a way that straight nailing alone cannot achieve.

Specifications

• Model Number: SP2Z
• Width: 3-1/2 in.
• Length: 6-5/8 in.
• Gauge: 20
• Coating/Finish: ZMAX
• Member Size: Nominal 2x
• Installation Fasteners: Install with (12) 0.148 x 3-in. nails (sold separately)
• Country of Origin: United States

Approved Applications

• Double-top-plate-to-stud connections
• Uplift resistance in wood-frame construction
• Exterior applications requiring enhanced corrosion resistance
• Treated-wood applications where standard galvanization may be insufficient
• Retrofit installations where ties are added after initial framing