The Simpson Strong-Tie MSTI60 Medium Strap Tie is a high-capacity steel tension strap built for demanding structural framing applications, including use on wood I-joists and vertical applications on composite wood products where applicable. Manufactured from 12-gauge steel with a G90 zinc galvanized finish, this 60-inch strap delivers reliable tension load resistance across a wide range of connections - from light repairs to heavy-duty structural projects. Its thoughtfully engineered nail pattern and spacing make it a go-to solution for builders and contractors who need performance and installation confidence in one straightforward connector.

Key Features

• High-capacity steel tension strap compatible with wood I-joists and composite wood products where applicable - gives structural contractors a single versatile strap tie that handles both engineered lumber and composite wood framing connections
• Staggered nail pattern combined with 3 in. nail spacing - minimizes the risk of splitting the wood during installation, protecting the integrity of the lumber and reducing rework
• 12-gauge steel construction at 60 in. length and 2-1/16 in. width - provides the material thickness and reach needed for high-load tension connections across longer spans
• G90 zinc galvanized coating - delivers extra corrosion resistance for long-term durability in exposed or moisture-prone framing environments
• Compatible with 10d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws - supports both nailed and screw-fastened installations, giving installers flexibility in fastener choice without compromising connection performance

Why This Product

• Engineered to protect the wood, not just connect it - the staggered nail pattern and 3 in. nail spacing work together to reduce splitting risk, which means cleaner installations and fewer callbacks caused by fastener-related lumber damage
• Built for modern engineered lumber - rated for use on wood I-joists as well as vertical applications on composite wood products where applicable, making this strap tie a practical fit for contemporary framing assemblies that rely on engineered wood components
• Long-term corrosion resistance from the start - the G90 zinc galvanized finish provides extra protection against corrosion, supporting performance and appearance in framing environments where moisture exposure is a concern
• Flexible installation with two fastener options - compatibility with both 10d x 1-1/2 in. nails and #9 x 1-1/2 in. Strong-Drive SD screws means this strap works with the tools and fasteners already on the job site, reducing delays and special-order dependencies

Specifications

• MPN: MSTI60
• Brand: Simpson Strong-Tie
• Length: 60 in.
• Width: 2-1/16 in.
• Gauge: 12
• Coating/Finish: Zinc Galvanized, G90
• Installation Fasteners: Install with 10d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws (sold separately)
• Country of Origin: United States

Approved Applications

• Tension load resistance in structural framing connections
• Use on wood I-joists for high-capacity strap tie applications
• Vertical use on composite wood products where applicable
• Designed to resist wind and seismic forces
• Suitable for diaphragm decking and wood chord open-web trusses where pneumatic nailing is necessary

Options

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

Frequently Asked Questions

What fasteners should be used to install the MSTI60?

The MSTI60 should be installed with 10d x 1-1/2 in. nails or #9 x 1-1/2 in. Strong-Drive SD screws for optimal performance.

Why does the MSTI60 use a staggered nail pattern?

The staggered nail pattern is specifically designed to reduce wood splitting during installation. Combined with the 3 in. nail spacing, this design minimizes the chance of splitting the wood as fasteners are driven in.

What materials is the MSTI60 compatible with?

The MSTI60 is a high-capacity steel tension strap suitable for use on wood I-joists as well as for vertical use on composite wood products where applicable.

What corrosion protection does the MSTI60 have?

The MSTI60 features a Zinc Galvanized G90 coating, which provides extra corrosion resistance, making it well-suited for applications where exposure to moisture or the elements is a concern.

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