The Simpson MSTI26 Medium Strap Tie is a high-capacity steel tension strap engineered to deliver reliable structural connections across a range of demanding applications. Built from 12-gauge steel and finished with a G90 zinc galvanized coating, this versatile strap is designed for use on wood I-joists as well as for vertical use on composite wood products where applicable. Its thoughtfully designed nail pattern and spacing make it a practical choice for contractors and builders tackling everything from light repairs to heavy-duty structural reinforcement.

Key Features

• High-capacity steel tension strap for wood I-joists and composite wood products - handles demanding load transfer requirements across a broad range of structural connection types, giving builders a single reliable solution for multiple applications
• Staggered nail pattern - distributes fastener placement to reduce stress concentration in the wood, helping preserve the integrity of the lumber during and after installation
• 3 in. nail spacing design - minimizes the chance of splitting the wood, so installers can drive fasteners with confidence even in split-sensitive materials
• 12-gauge steel construction - provides the structural rigidity and load-bearing strength needed for both light repair work and heavy-duty framing connections
• G90 zinc galvanized finish - delivers extra corrosion resistance, making this strap suitable for use in environments where long-term durability is a priority
• Compatible with 10d x 1 1/2 in. nails or #9 x 1 1/2 in. Strong-Drive SD screws - offers fastener flexibility so installers can work with tools and materials they already have on hand

Why This Product

• Engineered to protect the wood, not just connect it - the combination of a staggered nail pattern and 3 in. nail spacing actively reduces the risk of splitting during installation, which saves time and material compared to straps with no splitting mitigation built in
• Built for versatility across structural applications - approved for wood I-joist tension strap connections, vertical use on composite wood products, diaphragm decking, wood chord open-web trusses, and connections requiring resistance to wind and seismic forces, making it adaptable to a wide variety of framing scenarios
• Corrosion resistance you can count on long term - the G90 zinc galvanized coating goes beyond basic protection, giving this strap lasting durability in the structural environments where metal connector plates are most exposed to moisture and the elements
• Trusted Simpson engineering in a straightforward profile - at 2-1/16 in. wide and produced from 12-gauge steel, this strap is sized to fit standard framing layouts while delivering the high-capacity performance that Simpson Strong-Tie straps and plates are known for

Specifications

• Model Number: MSTI26
• Gauge: 12
• Width: 2-1/16 in.
• Length: 26 in.
• Thickness: 97 mil
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Approved Applications

• Wood I-joist tension strap connections
• Vertical use on composite wood products where applicable
• Diaphragm decking applications
• Wood chord open-web trusses where pneumatic nailing is necessary
• Connections requiring resistance to wind and seismic forces

Options

• Special sizes can be made to order. Contact us for Configurable Options and Special orders

Frequently Asked Questions

What fasteners are recommended for installing the MSTI26?

Install with 10d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws.

How does the MSTI26 help prevent wood splitting during installation?

The MSTI26 features a staggered nail pattern and is designed with a 3 in. nail spacing, both of which work together to minimize the chance of splitting the wood during fastener installation.

What type of corrosion protection does the MSTI26 have?

The MSTI26 is finished with a G90 zinc galvanized coating, which provides extra corrosion resistance suitable for a range of structural environments.

Can the MSTI26 be used with composite wood products?

Yes. In addition to its primary use on wood I-joists, the MSTI26 is also designed for vertical use on composite wood products where applicable.

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