The Simpson MSTC78 77-3/4 in. 14-Gauge Galvanized Medium Strap is a high-capacity structural connector from Simpson Strong-Tie, engineered to transfer tension loads across a wide range of wood-to-wood connections. Whether you are tackling light repairs or demanding structural applications, this heavy-gauge metal strap installs on the wide or narrow face of lumber and delivers consistent, load-rated performance. The G90 zinc galvanized coating adds durable corrosion resistance, making this strap a dependable choice wherever moisture exposure is a concern.

Key Features

• Designed to transfer tension loads in a wide variety of applications - gives contractors and builders a single versatile strap that works across floor-to-floor, clear span, and other structural connections without needing multiple connector types.
• High-capacity strap with a staggered nail pattern - the staggered layout distributes fastener load across the lumber, helping minimize wood splitting and preserving the structural integrity of the connection.
• Countersunk nail slots - provide a lower nail-head profile for a cleaner, flatter installation that reduces protrusion at the joint and simplifies finishing work.
• 77-3/4 in. length and 3 in. width - the generous span makes this strap well suited for long-reach tension connections such as floor-to-floor assemblies and wind or seismic resistance details.
• 14-gauge steel construction - delivers the thickness and rigidity required for heavy-duty structural projects while remaining workable during installation.
• G90 zinc galvanized coating - provides extra corrosion resistance compared to lighter galvanized finishes, extending service life in damp or exposed environments.

Why This Product

• Built for demanding tension load applications - the high-capacity design and heavy 14-gauge steel make this strap suitable for serious structural work including wind and seismic force resistance, not just simple repairs.
• Installer-friendly details that save time on the job - the staggered nail pattern reduces splitting so you spend less time pre-drilling, and countersunk slots keep nail heads flush for faster, cleaner assemblies.
• Corrosion-resistant finish for long-term reliability - the G90 zinc galvanized coating offers extra protection against moisture-related degradation, helping the connection maintain its rated performance over the life of the structure.
• Flexible enough for wide or narrow face lumber installations - the 3 in. width accommodates common framing lumber orientations, letting you use one strap across multiple connection scenarios without substituting parts mid-project.

Specifications

• MPN: MSTC78
• Brand: Simpson Strong-Tie
• Length: 77-3/4 in.
• Width: 3 in.
• Gauge: 14
• Thickness: 68 mil
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Install With: 16d sinkers or #9 x 1-1/2 in. Strong-Drive SD screws
• Country of Origin: United States

Approved Applications

• Wood-to-wood tension load transfer connections
• Floor-to-floor clear span applications
• Wide or narrow face of lumber installations
• Wind and seismic force resistance connections
• Light repairs through heavy-duty structural projects

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 MSTC78?

Install with 16d sinkers or #9 x 1-1/2 in. Strong-Drive SD screws for proper load-rated performance.

Why does the MSTC78 use a staggered nail pattern?

The staggered nail pattern is specifically designed to help minimize wood splitting during installation, maintaining the structural integrity of the lumber being connected.

What is the purpose of the countersunk nail slots on the MSTC78?

The nail slots have been countersunk to provide a lower nail-head profile, resulting in a cleaner, flatter installation that reduces protrusion at the connection point.

What corrosion protection does the MSTC78 offer?

The MSTC78 features a G90 zinc galvanized coating, which provides extra corrosion resistance and makes it suitable for use in environments where moisture exposure is a concern.

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