The Simpson 66L 6 in. x 6 in. 14-Gauge Galvanized L Strap from Simpson Strong-Tie is an L-shaped steel reinforcement strap engineered to create a strong, reliable connection where the end of one structural member intersects the end of another at a 90 deg. angle. Built from 14-gauge steel with a G90 zinc galvanized finish, this right-angle connector delivers dependable performance across a wide range of framing and repair applications. Its straightforward design supports installation with nails or bolts, and connection strength increases significantly when two straps are used together.

Key Features

• 90 deg. L-strap configuration - positions fasteners precisely where one member meets another at a right angle, giving you a secure, purpose-built connection rather than a makeshift fix.
• Strongest when used in pairs - running two straps back-to-back dramatically increases load transfer capacity, making this an ideal choice for joints that need to stand up to real structural demand.
• 6 in. x 6 in. equal-leg geometry - both legs of the strap cover equal surface area on each member, so fastener load is distributed evenly across the joint without favoring one side.
• 1 1/2 in. width in 14-gauge steel - heavier gauge construction resists bending and deformation under load, delivering the rigidity that light-duty straps simply cannot match.
• G90 zinc galvanized coating - provides extra corrosion resistance so the strap holds up in moisture-prone environments without sacrificing long-term structural integrity.
• Compatible with nails or bolts - accepts (10) 0.162 in. x 2-1/2 in. nails or (3) 3/8-in. diameter bolts, giving you flexibility to match the fastener type to your project requirements.

Why This Product

• Built for right-angle framing joints - the 66L is specifically designed for the connection type that general-purpose straps handle poorly: end-to-end 90 deg. intersections in beam-to-column and similar structural joints, so you get a connector that fits the application rather than one adapted to it.
• Scalable strength through paired installation - because the strap is engineered to work back-to-back without fastener interference, you can double connection strength on the same member whenever the load demands it, without adding complex hardware.
• Corrosion-resistant finish for lasting performance - the G90 galvanized coating goes beyond basic rust protection, making this strap a reliable choice for framing repairs and home projects where exposure to humidity or moisture is a real concern.
• Versatile fastening options keep the job moving - nail or bolt compatibility means this strap adapts to what you already have on hand, reducing the need for specialty fasteners and keeping light repairs and heavier framing work equally straightforward.

Specifications

• MPN: 66L
• Gauge: 14
• Length x Height: 6 in. x 6 in.
• Width: 1-1/2 in.
• Coating/Finish: Zinc Galvanized, G90
• Install With: (10) 0.162 in. x 2-1/2 in. nails or (3) 3/8-in. diameter bolts (sold separately)
• Country of Origin: United States

Approved Applications

• DIY/Home Projects

Frequently Asked Questions

What type of connection is the Simpson 66L designed for?

The 66L is designed to reinforce connections where the end of one structural member intersects the end of another at a 90 deg. angle, making it well suited for beam-to-column and right-angle framing joints.

What fasteners are required to install the 66L?

The 66L installs with (10) 0.162 in. x 2-1/2 in. nails or (3) 3/8-in. diameter bolts. It is important to use all specified fasteners for a proper installation.

Why is it recommended to use the 66L in pairs?

The 66L performs strongest when used in pairs. Installing two straps back-to-back on a structural member significantly increases load transfer capacity and overall connection strength.

What corrosion protection does the 66L offer?

The 66L features a G90 zinc galvanized coating, which provides extra corrosion resistance, making it suitable for applications where moisture exposure is a concern.

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