Product Description
The Simpson MSTA21Z MSTA 21-in. 18-Gauge ZMAX Galvanized Medium Strap Tie by Simpson Strong-Tie is engineered to resist tension loads in wood-to-wood uplift applications. Designed for use on the edge of 2x members, this medium strap tie features a staggered nail pattern to help minimize wood splitting and delivers load-rated performance that field-fabricated straps simply cannot match. ZMAX galvanization provides extra corrosion resistance, making this strap tie well-suited for exterior and treated-wood applications.
Key Features
- Straps are load rated with the correct thickness and number of fasteners, in contrast with field-fabricated straps
- Loads have been increased for wind and seismic forces
- Floor-to-floor clear span application
- For use on the edge of 2x members
- Length: 21 in.
- Width: 1-1/4 in.
- Made from 18-gauge steel
- ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
Specifications
- MPN: MSTA21Z
- Length: 21 in.
- Width: 1-1/4 in.
- Gauge: 18
- Coating: ZMAX
- Finish: ZMAX
- Member Size: 2x
- Country of Origin: United States
Approved Applications
- Wood-to-wood uplift tension load resistance
- Floor-to-floor clear span applications
- Edge of 2x member installations
- Exterior applications requiring corrosion resistance
- Treated-wood applications
Frequently Asked Questions
- What fasteners are recommended for installing the MSTA21Z?
- Install with 10d common nails or #9 x 1-1/2 in. Strong-Drive SD screws.
- Why is the ZMAX coating important for this strap tie?
- ZMAX galvanization offers extra corrosion resistance, making the MSTA21Z suitable for exterior and treated-wood applications where standard coatings may not provide adequate protection.
- What advantage does the staggered nail pattern provide?
- The staggered nail pattern is designed to help minimize wood splitting during installation, ensuring a secure connection without compromising the integrity of the wood member.
- How does the MSTA21Z differ from a field-fabricated strap?
- Unlike field-fabricated straps, the MSTA21Z is load rated with the correct thickness and number of fasteners, and its loads have been increased 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.
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