The Simpson MSTC66B3Z MSTCB 62-7/8 in. 14-Gauge ZMAX Galvanized Pre-Bent Medium Strap by Simpson Strong-Tie is a purpose-built structural connector designed to transfer tension loads from an upper-story shearwall to a beam on the story below. Constructed from 14-gauge steel with a ZMAX galvanized finish, this pre-bent strap delivers exceptional corrosion resistance for exterior and treated-wood applications, making it a reliable choice for demanding structural connections.

Key Features

• Pre-bent straps designed to transfer tension load from an upper story shearwall to a beam on the story below
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
• Made from 14-gauge steel for strength and durability
• 3 in. width and 62-7/8 in. height for medium strap applications
• Min. beam width: 3-1/2 in.; min. beam depth: 11-1/4 in.
• Minimum 3 in. beam width may be made up by double 2x members
• Simple, versatile solution for a wide range of structural connections
• Can be used on the wide or narrow face of lumber

Specifications

• MPN: MSTC66B3Z
• Brand: Simpson Strong-Tie
• Gauge: 14
• Width: 3 in.
• Height: 62-7/8 in.
• Coating/Finish: ZMAX
• Min. Beam Width: 3-1/2 in.
• Min. Beam Depth: 11-1/4 in.
• Installation Fasteners (sold separately): 10d common nails
• Country of Origin: United States

Approved Applications

• Transferring tension loads from an upper-story shearwall to a beam on the story below
• Exterior structural connections requiring enhanced corrosion resistance
• Treated-wood applications where standard galvanization may be insufficient
• Connections involving double 2x members to meet minimum beam width requirements
• Light repairs and heavy-duty structural projects requiring strap reinforcement

Frequently Asked Questions

What is the primary purpose of the Simpson MSTC66B3Z pre-bent strap?

The MSTC66B3Z is specifically designed to transfer tension loads from an upper-story shearwall to a beam on the story below, making it an essential component in multi-story structural assemblies.

What are the minimum beam size requirements for installing this strap?

The minimum beam width required is 3-1/2 in. and the minimum beam depth is 11-1/4 in. Additionally, a minimum 3 in. beam width may be made up by using double 2x members.

Why is the ZMAX galvanized finish important for this strap?

The ZMAX galvanization provides extra corrosion resistance compared to standard galvanized coatings, making the MSTC66B3Z suitable for exterior applications and use with treated wood, where exposure to moisture and preservative chemicals can accelerate corrosion.

What fasteners should be used to install the MSTC66B3Z?

This strap should be installed with 10d common nails for proper load transfer and code-compliant performance.

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