The Simpson Adjustable Concealed-Flange Truss Hanger for 4x18 members is a heavy-duty wood connector from Simpson engineered to support trusses and beams where precise vertical positioning matters. Its U-shaped design features extra-long, straight straps that allow the height location of the truss to be field-adjusted before final fastening, giving installers the flexibility to dial in exact placement on the jobsite. Concealed flanges keep the hanger profile tight and unobtrusive, making this connector a practical choice for restricted spaces where exposed-flange hardware simply will not fit. Compatible with both top-flange and face-mount installation methods, it adapts to a wide range of structural framing conditions.

Key Features

• Top-flange or face-mount installation compatibility - gives installers the freedom to choose the method that best suits the framing layout, reducing the need for multiple connector types on a single project.
• Extra-long straps for height adjustability - allow the truss height location to be set in the field before final fastening, eliminating guesswork and reducing the chance of costly repositioning later.
• Dense nail pattern in the straps - provides more installation options and makes top-flange fastening straightforward, even in tight or awkward framing conditions.
• Min./max. nailing installation options - let crews match the nailing schedule to the structural load requirement, offering flexibility without sacrificing engineered performance.
• Concealed flanges - keep the connector profile recessed and out of the way, making this hanger workable in restricted spaces where standard exposed-flange hangers cannot be accommodated.
• 16-gauge steel construction - delivers the structural strength needed to handle the demands of truss and beam support in 4x18 member applications.
• G90 zinc galvanized finish - provides corrosion resistance that helps the connector hold up in the moisture-exposed environments common in framing and structural applications.

Why This Product

• Built-in field adjustability sets it apart from fixed-height hangers - the extra-long strap design lets crews position the truss at the correct height during installation without being locked into a single elevation, saving time and reducing errors on complex framing jobs.
• Two installation methods in one connector - the ability to switch between top-flange and face-mount attachment means this single hanger can cover multiple framing scenarios, reducing the number of SKUs a crew needs to carry to the jobsite.
• Concealed flanges solve a real-world clearance problem - when framing runs into tight bays or restricted spaces where a standard hanger will not fit, the concealed-flange profile of this connector provides a code-compatible solution without requiring custom fabrication.
• American-made with a corrosion-resistant finish - G90 galvanized coating helps protect structural integrity in demanding conditions, and the connector is produced domestically to consistent manufacturing standards.

Specifications

• MPN: THAC418
• Brand: Simpson Strong-Tie
• Member Size: 4x18
• Seat Width: 3-5/8 in.
• Hanger Height: 17-1/2 in.
• Gauge: 16
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Approved Applications

• Supporting trusses and beams requiring field-adjustable height positioning
• Top-flange installation onto header or carrying member
• Face-mount installation where top-flange attachment is not practical
• Installations in restricted spaces where concealed flanges are required

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