The Simpson MST27 Medium Strap Tie is a load-rated, precut structural strap engineered by Simpson Strong-Tie to resist tension loads in floor-to-floor connections and a wide range of other structural framing applications. Formed from 12-gauge steel with a G90 zinc galvanized finish, this high-capacity strap features a dense nailing pattern and accepts nails, bolts, or Strong-Drive SD Connector screws, giving installers the flexibility to match the fastener type to the demands of the job. Its precise fastener hole layout and correct thickness make it suitable for connecting double or greater 2x members quickly and with confidence.

Key Features

• Dense nailing pattern with multiple fastener options - accepts (30) 0.162 in. x 2-1/2 in. nails, (4) 1/2 in. bolts, or (30) #10 x 1-1/2 in. Strong-Drive SD Connector screws, so installers can adapt to available tools and site conditions without compromising capacity
• Designed to resist wind and seismic forces - engineered for structural tension load applications where code-compliant lateral and uplift resistance is required
• Compatible with embedded purlin anchor (PA) straps - can be paired with PA straps to achieve additional length, making it a practical solution when a single strap falls short
• 12-gauge steel construction - provides the structural rigidity and load capacity needed for demanding floor-to-floor and multi-member connections
• G90 zinc galvanized coating - delivers a high level of corrosion resistance, helping the strap maintain structural integrity in moisture-exposed framing environments
• Precut to 27 in. with a precise fastener hole layout - eliminates field measuring and guesswork, speeding up installation while ensuring optimal performance from the first fastener to the last

Why This Product

• Load-rated and precut for confident, code-compliant installs - because the MST27 comes with the correct thickness, length, and number of fastener holes already established, structural connectors go in right the first time with no field fabrication required
• Three approved fastener types in one strap - the ability to install with nails, bolts, or Strong-Drive SD Connector screws means this single strap fits a broader range of jobsite conditions and crew setups than straps limited to one fastener method
• Built for wind and seismic applications - engineered specifically to resist the tension forces generated by wind and seismic events, making it a dependable choice for structural framing projects where performance under lateral loading is critical
• Extendable with PA straps for greater versatility - when a 27 in. reach is not enough, compatibility with embedded purlin anchor straps allows the connection to be extended without switching to a different product or fabricating a custom solution

Specifications

• Model Number (MPN): MST27
• Gauge: 12
• Width: 2-1/16 in.
• Length: 27 in.
• Coating / Finish: Zinc Galvanized, G90
• Member Size: 3-1/2 in. or greater
• Installation Fasteners: Install with (30) 0.162 in. x 2-1/2 in. nails OR (4) 1/2 in. bolts OR (30) #10 x 1-1/2 in. Strong-Drive SD Connector screws (sold separately)
• Country of Origin: United States

Approved Applications

• Floor-to-floor tension load resistance connections
• Wind and seismic force resistance applications
• Connecting double or greater 2x structural members
• Extended-length applications when used in conjunction with embedded purlin anchor (PA) straps

Frequently Asked Questions

What fasteners are approved for installing the MST27?

The MST27 can be installed with (30) 0.162 in. x 2-1/2 in. nails, (4) 1/2 in. bolts, or (30) #10 x 1-1/2 in. Strong-Drive SD Connector screws, giving installers flexibility depending on the application and available tools.

What is the minimum member size required for the MST27?

The MST27 is designed for use with members that are 3-1/2 in. or greater, making it suitable for connecting double or greater 2x lumber members.

What corrosion protection does the MST27 have?

The MST27 features a G90 zinc galvanized coating, which provides a high level of corrosion resistance suitable for structural connector applications.

Can the MST27 be extended for longer applications?

Yes. The MST27 can be used in conjunction with embedded purlin anchor (PA) straps to achieve additional length when a single strap does not span the required distance.

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