The Simpson MSTA18Z 18" Medium Strap Tie from Simpson is engineered to resist tension loads in wood-to-wood uplift applications, delivering a dependable structural connection where it matters most. Designed specifically for use on the edge of 2x members, this medium strap tie features a staggered nail pattern that helps minimize wood splitting during installation. The ZMAX galvanized coating provides extra corrosion resistance, making it well suited for exterior and treated-wood applications where long-term durability is essential.

Key Features

• Load-rated with correct thickness and number of fasteners - eliminates guesswork compared to field-fabricated straps, giving you a reliable, code-consistent connection every time
• Loads increased for wind and seismic forces - engineered to meet the demands of high-stress structural environments, supporting safer framing in wind- and seismic-prone areas
• Floor-to-floor clear span application - purpose-built for this common framing scenario, reducing the need for custom or improvised solutions on the job site
• Designed for use on the edge of 2x members - ensures proper fit and load transfer in standard wood-framed construction without modification
• Staggered nail pattern - minimizes wood splitting during installation, preserving the structural integrity of the connected members
• 18-gauge steel construction - provides the structural strength needed for rated tension-load applications in wood-to-wood connections
• ZMAX galvanization - offers extra corrosion resistance beyond standard coatings, making this strap tie a sound choice for exterior environments and treated-lumber applications
• Installs with 10d common nails or #9 x 1 1/2 in. Strong-Drive SD screws - compatible with widely available fasteners, keeping installation straightforward and efficient

Why This Product

• Engineered performance you can count on - unlike field-fabricated straps, this strap tie is load rated with the correct thickness and number of fasteners, and its loads have been increased for wind and seismic forces, giving builders a tested, predictable connection rather than a best-guess one
• Built for challenging installation environments - the ZMAX galvanized finish goes beyond standard galvanization to resist corrosion in exterior and treated-wood applications, extending the service life of the connection in conditions where lesser coatings fall short
• Protects the wood, not just the connection - the staggered nail pattern is specifically designed to reduce wood splitting, helping maintain the full integrity of the framing members throughout installation and over time
• Made in the United States to Simpson specifications - produced domestically and designed for floor-to-floor clear span and wood-to-wood uplift applications, this medium strap tie brings manufacturer-engineered consistency to structural framing projects

Specifications

• MPN: MSTA18Z
• Gauge: 18
• Length: 18 in.
• Width: 1-1/4 in.
• Coating/Finish: ZMAX
• Member Size: 2x
• Country of Origin: United States

Approved Applications

• Wood-to-wood uplift tension load resistance
• Floor-to-floor clear span connections
• Edge of 2x member installations
• Exterior and treated-wood applications requiring enhanced corrosion resistance
• Wind and seismic force-rated connections

Frequently Asked Questions

What fasteners are recommended for installing the MSTA18Z?

Install with 10d common nails or #9 x 1-1/2 in. Strong-Drive SD screws for a properly rated connection.

Why does the MSTA18Z use a staggered nail pattern?

The staggered nail pattern is designed to help minimize wood splitting during installation, ensuring the integrity of the connected wood members is maintained.

What is ZMAX galvanization and why does it matter?

ZMAX galvanization is an enhanced corrosion-resistant coating that makes the MSTA18Z suitable for exterior and treated-wood applications where standard galvanization may not provide adequate protection.

How does the MSTA18Z differ from a field-fabricated strap?

Unlike field-fabricated straps, the MSTA18Z is load rated with the correct thickness and number of fasteners, and its loads have been increased to account for wind and seismic forces, providing a more reliable and code-compliant connection.

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