The Simpson HUCTF Top-Flange Concealed-Flange Joist Hanger for 3x10 Lumber is a heavy-duty hybrid connector engineered to deliver the structural reliability of a face-mount hanger with the clean, low-profile installation of a top-mount design. Built for nominal 3x10 joist members, this hanger features two concealed top flanges that keep hardware out of sight while enabling dependable end-of-wall and corner framing connections. Face-nailing attachment secures the hanger firmly to the supporting member, and the 12-gauge steel construction paired with a G90 zinc galvanized coating ensures long-term corrosion resistance across demanding residential and commercial framing applications. Tested, load rated, and code compliant, this connector delivers the performance and confidence that structural framing projects require.

Key Features

• Hybrid face-mount and top-mount design - combines the strength of face-nailing with concealed top flanges, giving installers a versatile connector suited to end-of-wall and corner joist connections without visible hardware
• Concealed top flanges - keep the hanger hidden above the joist for a cleaner finish, making this hanger a practical choice wherever exposed hardware is undesirable
• Face-nailing attachment - allows the hanger to be securely fastened directly to the supporting member, providing a firm, stable connection at the header
• 12-gauge steel construction - delivers the structural strength needed for heavy-duty framing applications where load capacity and long-term performance matter
• G90 zinc galvanized coating - provides corrosion resistance to protect the hanger in environments where moisture exposure is a concern, extending service life
• Slope capability up to 45 deg. - accommodates angled joist installations without requiring a separate connector, adding flexibility for non-standard framing layouts
• Tested, load rated, and code compliant - the HUCTF series meets established code requirements, giving builders and inspectors documented confidence in every connection
• Rough beam sizes available by special order - allows the same proven design to be adapted for projects that fall outside standard nominal lumber dimensions

Why This Product

• One connector replaces two hanger types - the hybrid design merges face-mount and top-mount functionality into a single unit, reducing the need to source and stock separate hangers for end-of-wall or corner framing conditions
• Concealed flanges deliver a cleaner installation - hardware stays hidden above the joist line, making this hanger well suited for finished framing where aesthetics and a tidy connection point are important alongside structural performance
• Built-in slope flexibility without extra hardware - the ability to slope up to 45 deg. means contractors can handle angled joist runs with the same connector rather than sourcing a specialty part, saving time on complex framing layouts
• Code-compliant and load rated out of the box - because the HUCTF series is independently tested and code compliant, this joist hanger supports straightforward inspections and gives project teams documented assurance that the connection meets structural requirements

Specifications

• Manufacturer Part Number (MPN): HUC310TF
• Series: HUCTF
• Nominal Member (Joist) Size: 3x10
• Steel Gauge: 12-gauge
• Width - W: 2-9/16 in.
• Height - H: 9-1/8 in.
• Bearing - B: 2-1/2 in.
• Top Flange - TF: 2-1/2 in.
• Coating / Finish: Zinc Galvanized, G90
• Mount Type: Concealed Top-Flange, Face-Mount (Hybrid)
• Maximum Slope: 45 deg.
• Skew Options: None available
• Country of Origin: United States

Approved Applications

• End-of-wall joist-to-header connections requiring concealed top flanges