The Simpson WP3.31/9.25 Welded Top-Flange Joist Hanger is a heavy-duty connector engineered to secure joists to purlins or beams in a wide range of structural framing applications. Built by Simpson to handle wood-to-wood, wood-to-steel, and cold-formed steel connections, this top-flange hanger delivers reliable load transfer while accommodating highly angled and sloped framing conditions that standard hangers cannot address.

Key Features

• Top-flange connection design - transfers load directly through the flange for a secure, stable joist seat that works across multiple framing systems
• Accommodates skews up to 84 deg. - handles nearly parallel framing angles, giving contractors the flexibility to complete complex structural layouts without custom fabrication
• Slopes up to 45 deg. supported - suits pitched roofs and sloped floor systems, reducing the need for field modifications on angled framing
• Wood-to-wood, wood-to-steel, and cold-formed steel compatibility - a single hanger model covers multiple connection types, simplifying procurement and reducing the number of SKUs needed on a job site
• Economical nail or screw fastening pattern - achieves maximum download capacity with a minimal number of fasteners, lowering installed cost without compromising structural performance
• 12 ga. stirrup construction - heavy-gauge steel provides the rigidity and strength needed for demanding load conditions in residential and commercial framing
• Simpson Strong-Tie Gray Paint finish - provides a consistent, durable coating suitable for standard interior and protected structural applications

Why This Product

• Exceptional angular range in one product - the combination of skew capacity up to 84 deg. and slope capacity up to 45 deg. means this single hanger addresses framing challenges that would otherwise require multiple specialized connectors
• Multi-system versatility - approved for wood-to-wood, wood-to-steel, and cold-formed steel framing applications, making it a practical choice for both residential construction and light commercial structural work
• Lower installed cost through efficient fastening - the design achieves full download capacity with fewer fasteners, reducing labor time and hardware costs on every installation
• Trusted Simpson engineering - produced in the United States and finished with Simpson Strong-Tie Gray Paint, this hanger reflects the build quality and consistency that structural contractors rely on for code-compliant framing connections

Specifications

• Model Number: WP3.31/9.25
• Brand: Simpson Strong-Tie
• Joist Size: 3-5/16 in. x 9-1/4 in.
• Description: Welded Top-Flange Joist Hanger
• Material - Stirrup: 97 mil (12 ga.)
• Finish: Simpson Strong-Tie Gray Paint; some models available hot-dip galvanized as a custom order
• Country of Origin: United States

Approved Applications

• Wood-to-wood structural connections
• Wood-to-steel structural connections
• Cold-formed steel framing applications
• Joist support on purlins or beams
• Skewed framing connections up to 84 deg.
• Sloped framing connections up to 45 deg.

Options

• Contact us for Configurable Options and Special orders
• Refer to the Special-Order Worksheet for ease of ordering a Custom WP Hanger

Note: Product dimensions may differ from picture. Please see the item description above for specifications.