The Simpson MTS30Z 30" 16-Gauge ZMAX Galvanized Medium Twist Strap from Simpson is a purpose-built tension connector designed to join two wood members securely and resist uplift forces at the heel of a truss. Constructed from 16-gauge steel with a ZMAX galvanized finish, this medium twist strap is engineered for use in exterior environments and applications involving treated lumber, where standard coatings fall short. The 30 in. length and 2" bend section make it a practical, interference-free solution for rafter connections and truss assemblies that demand both structural reliability and corrosion protection.

Key Features

• Tension connection between two wood members - the twist strap design transfers load efficiently across the joint, keeping connections secure under stress.
• Resists uplift at the heel of a truss economically - delivers structural performance where it is needed most without requiring complex hardware or costly installation methods.
• 2" bend section eliminates interference at transition points - allows the strap to cross cleanly between wood members without obstruction, resulting in a neater, more secure installation.
• Made from 16-gauge steel - provides the strength and rigidity required for moderate uplift load resistance in both light-repair and heavy-duty framing applications.
• ZMAX galvanization for extra corrosion resistance - this finish is specifically suited for exterior conditions and treated-wood contact, where moisture and chemical exposure would compromise standard galvanized coatings over time.
• Install with 10d common nails or 10d x 1-1/2 in. nails - compatible with widely available fasteners, keeping installation straightforward and cost-effective on the job site.

Why This Product

• Built for treated-wood and exterior use - the ZMAX coating goes beyond standard galvanization to protect against the accelerated corrosion that treated lumber chemicals and outdoor moisture can cause, making this strap a dependable long-term choice for exposed framing connections.
• Simplified truss uplift resistance without wrapping - the MTS30Z achieves its allowable load without needing to be wrapped over the truss, reducing installation complexity and saving time during roof framing.
• Interference-free design for cleaner connections - the 2" bend section is engineered to eliminate obstruction at the transition between wood members, giving contractors a twist strap that fits precisely without forcing awkward adjustments at the connection point.
• Versatile enough for a wide range of wood framing jobs - usable on the wide or narrow face of lumber, this strap adapts to light repairs and heavy-duty structural projects alike, making it a practical addition to any framing toolkit.

Specifications

• Model Number (MPN): MTS30Z
• Brand: Simpson Strong-Tie
• Length: 30 in.
• Gauge: 16
• Thickness: 54 mil
• Coating: ZMAX
• Finish: ZMAX
• Country of Origin: United States

Approved Applications

• Tension connections between two wood members
• Resisting uplift at the heel of a truss
• Rafter connections requiring moderate uplift load resistance
• Exterior applications requiring enhanced corrosion resistance
• Treated-wood applications where standard galvanization is insufficient
• Use on the wide or narrow face of lumber for light repairs or heavy-duty projects

Options

• Available with the bend reversed. Specify "-REV" after the model number, such as MTSXX-REV.

Frequently Asked Questions

What type of fasteners should be used to install the MTS30Z?

Install with 10d common nails or 10d x 1-1/2 in. nails.

What is the purpose of the 2" bend section on the MTS30Z?

The 2" bend section eliminates interference at the transition points between wood members, allowing for a cleaner and more secure connection without obstruction.

Why is ZMAX galvanization important for this twist strap?

ZMAX galvanization offers extra corrosion resistance, making the MTS30Z suitable for exterior applications and use with treated wood, where standard coatings may not provide adequate protection against moisture and chemical exposure.

Does the strap need to be wrapped over the truss to achieve its allowable load rating?

No. The MTS30Z does not need to be wrapped over the truss to achieve the allowable load, simplifying installation while still delivering reliable performance.

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