The Simpson MSTAM24Z 24" 18-Gauge ZMAX Galvanized Masonry Strap Tie is engineered by Simpson to resist tension loads in wood-to-masonry uplift applications, making it a reliable choice for structural connections between wood framing and either concrete or grout-filled concrete masonry units. Its staggered nail pattern helps minimize wood splitting during installation, and its ZMAX galvanized finish provides enhanced corrosion resistance suited for exterior conditions and treated-wood assemblies.

Key Features

• Load-rated with correct thickness and fastener count - eliminates guesswork and inconsistency associated with field-fabricated straps, giving builders confidence in every connection
• Increased load values for wind and seismic forces - means the strap meets the demands of high-stress structural applications where uplift resistance is critical
• Floor-to-floor clear span application - supports multi-story construction needs without requiring intermediate blocking or additional hardware
• Staggered nail pattern design - helps minimize wood splitting during fastening, reducing material waste and improving installation quality
• ZMAX galvanized coating - provides extra corrosion resistance for exterior environments and connections involving treated lumber, extending the service life of the strap
• 18-gauge steel construction - delivers the structural strength and dimensional consistency required for rated tension load applications in masonry assemblies

Why This Product

• Engineered specifically for masonry connections - unlike generic field-cut straps, the MSTAM24Z is purpose-built and load-rated for wood-to-masonry uplift and tension resistance in both concrete and grout-filled concrete masonry unit applications, so you are not left estimating capacity on the job site
• Built-in protection for exterior and treated-wood use - the ZMAX galvanized finish goes beyond standard galvanization to guard against corrosion in the conditions where masonry ties are most commonly exposed, helping the connection hold up over the long term
• Installer-friendly design that protects the wood - the staggered nail pattern reduces the risk of splitting framing lumber during fastening, which means fewer callbacks and less wasted material on the project
• Wind and seismic load ratings already built in - for projects in regions subject to high-wind or seismic code requirements, the MSTAM24Z carries increased load values for those forces, so compliance is supported without requiring additional engineering workarounds

Specifications

• Model Number: MSTAM24Z
• Gauge: 18
• Strap Length: 24 in.
• Width: 1-1/4 in.
• Coating: ZMAX
• Finish: ZMAX
• Country of Origin: United States

Approved Applications

• Wood-to-masonry uplift and tension load resistance
• Concrete substrate connections
• Grout-filled concrete masonry unit (GFCMU) connections
• Floor-to-floor clear span applications
• Exterior and treated-wood applications requiring enhanced corrosion resistance

Installation

• Install with (9) 0.148 in. x 3 in. common nails AND (5) 1-1/4 in. x 2-1/4 in. Titen Turbo screws for GFCMU OR (5) 1-1/4 in. x 1-3/4 in. Titen Turbo screws for concrete
• Staggered nail pattern helps minimize wood splitting during installation

Frequently Asked Questions

What is the MSTAM24Z designed to do?

The Simpson Strong-Tie MSTAM24Z is designed to resist tension loads in wood-to-masonry uplift applications. It connects wood framing to either concrete or grout-filled concrete masonry units (GFCMU) and supports floor-to-floor clear span applications.

What fasteners are required to install the MSTAM24Z?

Installation requires (9) 0.148 in. x 3 in. common nails along with either (5) 1-1/4 in. x 2-1/4 in. Titen Turbo screws when attaching to GFCMU, or (5) 1-1/4 in. x 1-3/4 in. Titen Turbo screws when attaching to concrete.

Why does the MSTAM24Z use a staggered nail pattern?

The staggered nail pattern is specifically incorporated into the MSTAM design to help minimize wood splitting during installation, making it safer and more effective than field-fabricated alternatives.

What makes the ZMAX coating beneficial for this strap tie?

ZMAX galvanization provides extra corrosion resistance, making the MSTAM24Z well suited for exterior applications and installations involving treated wood, where standard galvanized coatings may be insufficient over time.

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