The Simpson Strong-Tie A21Z is a formed steel framing angle from the company's A-series of general-purpose connectors. It is a single piece of sheet steel bent to 90 degrees, with fastener holes punched through both legs so the angle can be nailed or screwed to two members meeting at a right angle. It is the kind of connector used wherever a butted or lapped wood joint needs a metal tie rather than relying on end-grain fastening alone.

The Z suffix in the model number identifies the ZMAX galvanized version of the A21 angle, a zinc-coated finish for jobs where the connector will see moisture or will bear against treated lumber, which is corrosive to bare steel. Zinc coating on a connector works sacrificially, corroding in place of the steel beneath it, and is the standard choice for exterior and damp-location framing hardware.

Angles of this type are installed singly, in pairs on opposite faces of a joint, or in a repeating pattern along a run of blocking. Fasteners should fill the punched holes as the manufacturer's installation instructions direct, since the holes are sized and placed for a specific fastener rather than for whatever is on hand.

Key Features

• Formed steel angle bent to 90 degrees for connecting two framing members that meet at a right angle
• ZMAX galvanized finish, the zinc-coated version of the A21 angle indicated by the Z suffix
• Fastener holes punched through both legs so the connector can be fixed to each member independently
• Galvanized coating protects the steel in damp locations and in contact with preservative-treated lumber
• Symmetrical form that can be installed in either orientation, or in opposing pairs on both faces of a joint
• Installs with nails or screws driven through the punched holes, with no drilling or welding required
• Supplied as an individual connector rather than in a carton quantity

Applications

• Tying wood framing members together where they meet at a right angle
• Fastening blocking, nailers and short cripples to studs, plates and joists
• Reinforcing butted corner joints in box framing, shelving and built-in casework
• Exterior and damp-location wood framing where galvanized connectors are called for
• Connections against preservative-treated lumber, where uncoated steel is not appropriate
• Repair and reinforcement of existing wood joints that have opened or pulled loose
• Fixing furring, cleats and small framing assemblies to structural members

Product Details

• Brand: Simpson Strong-Tie
• Model: A21Z
• Product Line: A-Series Angle
• Type: Framing connector, 90-degree angle
• Material: Steel
• Finish: ZMAX galvanized
• Unit of Measure: Each

Specifications

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