Key Features
No Stringer Notching The whole point of this connector is simple: support stair treads without cutting deep notches into the stringer. That helps preserve stringer strength and speeds up layout and install. 12-Gauge Steel Build This Simpson Strong-Tie staircase angle uses 12-gauge steel for a heavy-duty connection where tread support matters. If you are building stairs that need to stay solid, thicker material matters. ZMAX for Exposure The ZMAX coating adds corrosion resistance for outdoor projects or areas exposed to moisture. Pair it with the correct galvanized fasteners so the whole connection holds up, not just the bracket.
Overview
The Simpson Strong-Tie TA10Z-R Staircase Angle is a heavy-duty stair framing connector built to support wood stair treads while avoiding the old-school practice of deeply notching stringers. This is a staircase angle designed for structurally sound staircase framing. Model Number: TA10Z-R. If you are building exterior stairs, deck stairs, or replacement stair assemblies and want a cleaner, stronger wood-to-wood connection, this bracket is made for that job.
The big advantage here is what it eliminates. Conventional stringer notching removes material from the stringer right where you need strength. The TA10Z-R is designed to reduce or eliminate that extra cutting, which helps keep more of the stringer intact. On the job, that means less layout complexity, less chance of overcutting, and a more consistent way to attach stair treads across the run.
Simpson builds this connector from 12-gauge steel, and that matters because stair hardware is not where you want thin metal or vague load path thinking. The 10-1/4 inch length gives you a long bearing surface and multiple fastener locations, helping spread the connection across the framing instead of concentrating everything in one small spot. It is also useful for heavy-duty 90 degree connections where a narrow angle is needed, so it is not limited to stair work only.
The TA10Z-R uses a ZMAX coating for added corrosion resistance, which makes it a better fit for decks, outdoor stairs, and other moisture-prone framing conditions than a basic interior-only connector. That does not mean any screw will do. Simpson specifically notes that the correct fasteners must be used to achieve published load values, and supplementary product data calls for hot-dip galvanized fasteners meeting ASTM A153 where applicable. In plain terms: match the fastener to the connector and the environment if you want the connection to perform the way it is supposed to.
This connector is part of Simpson Strong-Tie’s deck and fence connector lineup and is intended for wood-to-wood fastening. Published product information also notes kit versions of this angle are available with Simpson Strong-Drive SDS heavy-duty connector screws, which is useful if you want a matched hardware option from the same system. If you are buying the single TA10Z-R piece, verify your fastener plan before you start so you are not improvising at install time.
Who should buy it? Carpenters, deck builders, remodelers, and serious DIYers building exterior stairs or reinforcing stair framing. If your priority is a cleaner install, less stringer weakening, and a connector from a brand inspectors and contractors recognize, this is the right kind of hardware. If you are just looking for a cheap light-duty bracket, this is probably more connector than you need. But if the stairs matter, that is exactly the point.
Protect Stringer Strength
This is why guys use this style of stair connector in the first place. Instead of relying on aggressive notches cut into the stringer, the angle supports the tread connection with steel hardware where the load is actually happening.
- Designed for structurally sound staircase framing
- Helps eliminate complicated stringer notching that can weaken stair stringers
Long, Narrow Profile for Stair Work
The TA10Z-R is not a generic angle bracket. Its long profile is built around stair tread support and other narrow heavy-duty 90 degree connections where a standard angle is not the right shape.
- Overall length: 10-1/4 in.
- Useful where a narrow angle format fits better than a wider structural angle
Designed for Real Deck and Stair Conditions
Outdoor stairs and deck stairs take abuse from movement, weather, and foot traffic. The ZMAX-coated version is the one you want when the project lives outside or sees regular moisture.
- ZMAX coating adds corrosion resistance
- Use the specified fasteners to achieve published load values
What’s in the Box
- (1) Simpson Strong-Tie TA10Z-R Staircase Angle
Fasteners are not included with the single angle. Kit versions are sold separately.
Key Specifications
| Length | 10-1/4 in. |
|---|---|
| Gauge | 12 gauge |
| Material | Steel |
| Finish | ZMAX coating |
| Application | Wood-to-Wood Fastening |
| Packaging Quantity | 1 |
| Weight | 0.7 lb |
| Mounting Type | Corner Mount |
Compatibility
Framing Material Designed for wood-to-wood fastening in stair framing and similar 90 degree wood connections. Fasteners Use the specified connector fasteners to achieve published load values. Product information references Simpson Strong-Drive SDS Heavy-Duty Connector screws in kit versions and hot-dip galvanized fasteners meeting ASTM A153 in supplementary data. Exposure Conditions The ZMAX-coated version is intended for outdoor projects or jobs where moisture is present. Match the connector with corrosion-resistant fasteners.
Built For
Carpentry Construction Deck Building Stair Framing Remodeling General Contracting Outdoor Stairs Serious DIY / Hobbyist
Pro Tip
If you are using the TA10Z-R on an exterior stair build, do not cheap out on generic interior screws. Use the specified galvanized connector fasteners so the bracket and fasteners age at the same pace and the published load values actually mean something on the job.
Tool Nut’s Take
Tool Nut’s Take
Simpson Strong-Tie TA10Z-R Staircase Angle Keeps Stair Framing Simple and Strong
If you want to avoid hacking up stringers and still end up with a solid stair connection, this is the kind of hardware worth using.
- Who it’s for: Deck builders, carpenters, remodelers, and DIYers building wood stairs that need a cleaner tread support connection.
- Why it stands out: The long 10-1/4 inch, 12-gauge design is purpose-built for stair work, and the ZMAX coating makes more sense for outdoor jobs than a basic interior angle.
- Worth knowing: This listing is for a single connector, not the screw kit, so have the right fasteners ready before install.
Common Questions
- What is the TA10Z-R used for? It is used for structurally sound staircase framing and can also be used for heavy-duty 90 degree wood connections where a narrow angle is needed.
- How long is the connector? The TA10Z-R is 10-1/4 inches long.
- What is it made from? Simpson lists it as a 12-gauge steel staircase angle with a ZMAX coating.
- Is it a good choice for outdoor stairs? Yes. Simpson specifies the ZMAX-coated version for projects where moisture is present, but you still need compatible corrosion-resistant fasteners.
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