The Simpson TA10ZKT 10-1/4 in. 12-Gauge ZMAX Staircase Angle is a structural connector engineered for reliable staircase framing and heavy-duty 90 deg. connections. Built from 12-gauge steel with a ZMAX galvanized finish, it delivers the corrosion resistance needed for exterior builds and pressure-treated wood applications, while its narrow angle profile fits precisely where standard connectors cannot. Each kit includes two angles and the Strong-Drive SDS screws required for installation, so the connection is ready to complete right out of the box.

Key Features

• Designed for structurally sound staircase framing - provides a reliable, engineered connection that meets structural requirements without compromising stringer integrity.
• Eliminates complicated stringer notching - removes the need for difficult cuts that can weaken the stair stringers, resulting in a stronger finished staircase and a faster installation process.
• Also ideal for heavy-duty 90 deg. connections where a narrow angle is needed - the slim profile makes this connector versatile beyond stair framing, fitting tight framing scenarios where wider hardware would not work.
• Made from 12-gauge steel - the heavy-gauge construction delivers the rigidity and load capacity required for structural connector applications.
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications - the advanced coating goes beyond standard galvanization to protect against the accelerated corrosion that treated lumber chemicals and outdoor exposure can cause.
• Installs with included 1/4 in. x 1-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws - the recommended fasteners are included in the kit, eliminating a separate trip for hardware and ensuring a compatible, tested installation.

Why This Product

• Stronger stairs without weakening the structure - by replacing traditional notching methods with a bolted angle connection, this staircase angle preserves full stringer depth and produces a more consistent, structurally sound stair frame.
• Built for harsh conditions from the start - the ZMAX galvanized coating is specifically suited for exterior framing and pressure-treated wood contact, where standard hardware degrades prematurely and requires replacement.
• A two-in-one framing solution - beyond stair construction, the narrow 90 deg. profile handles heavy-duty right-angle framing connections in tight spaces, extending the value of this connector across multiple project types.
• Complete kit with compatible fasteners included - pairing two angles with the correct Strong-Drive SDS screws in a single kit means no guesswork on fastener compatibility and no missing hardware on the job site.

Specifications

• Model Number: TA10ZKT
• Length: 10-1/4 in.
• Gauge: 12
• Coating/Finish: ZMAX
• Country of Origin: United States

Approved Applications

• Structural staircase framing as a replacement for traditional stringer notching
• Heavy-duty 90 deg. framing connections where a narrow angle connector is needed
• Exterior construction applications requiring corrosion-resistant hardware
• Projects involving pressure-treated wood where enhanced corrosion protection is required

What's Included

Each kit contains Two (2) Simpson Strong-Tie TA10 ZMAX Staircase Angles, 1/4 in. x 1-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws.

Frequently Asked Questions

What problem does the TA10ZKT staircase angle solve compared to traditional stair framing methods?

The TA10ZKT eliminates complicated stringer notching that can weaken the stair stringers. By using these structural angles instead, builders achieve a stronger and more consistent framing connection without compromising the integrity of the stringers.

What type of coating does the TA10ZKT have, and why does it matter?

The TA10ZKT features a ZMAX galvanized coating, which offers extra corrosion resistance compared to standard galvanization. This makes it particularly well suited for exterior applications and projects involving pressure-treated or treated wood, where standard hardware may degrade over time.

What fasteners are recommended for installing the TA10ZKT, and are they included?

Install with 1/4 in. x 1-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the kit.

Can the TA10ZKT be used for applications other than staircase framing?

Yes. In addition to staircase framing, the TA10ZKT is also ideal for heavy-duty 90 deg. connections where a narrow angle connector is needed, making it a versatile structural hardware solution for a variety of framing projects.