The Simpson WP310 Welded Top-Flange Joist Hanger is a heavy-duty connector built to support joists on purlins or beams across a wide variety of framing conditions. Whether the application involves wood-to-wood, wood-to-steel, or cold-formed steel configurations, this welded hanger delivers reliable load transfer and structural integrity. Its top-flange design combined with broad angular adjustment capability makes it a go-to choice for contractors and builders tackling both straightforward and geometrically complex framing projects.

Key Features

• Wide Skew Range - Accommodates skews up to 84 deg., giving builders the flexibility to work with angled framing layouts without requiring custom fabrication on site.
• Generous Slope Capacity - Handles slopes up to 45 deg., making this hanger well suited for roof framing, cathedral ceilings, and other pitched structural applications.
• Multi-Application Compatibility - Approved for wood-to-wood, wood-to-steel, and cold-formed steel framing connections, reducing the need to stock multiple hanger types for different job conditions.
• Welded Top-Flange Construction - The welded build and top-flange design work together to provide consistent, dependable load transfer at the connection point, supporting long-term structural performance.
• Heavy-Gauge Stirrup Material - Constructed from 97 mil (12 ga.) steel, delivering the material strength needed for demanding joist support applications.
• Simpson Strong-Tie Gray Paint Finish - A durable painted finish provides baseline corrosion resistance for standard interior framing environments.

Why This Product

• Handles the Full Range of Angled Framing - With skew capacity up to 84 deg. and slope capacity up to 45 deg., this hanger covers framing geometries that would challenge most standard connectors, reducing the need for workarounds or field modifications.
• One Hanger, Multiple Structural Systems - Its compatibility with wood-to-wood, wood-to-steel, and cold-formed steel framing means this single product can serve across different construction types on the same project.
• Built to a Trusted Standard - Engineered and produced by Simpson, a widely recognized name in structural connectors, the WP310 carries the design rigor that structural professionals rely on for code-sensitive framing connections.
• Heavy-Gauge Welded Construction for Long-Term Reliability - The 97 mil (12 ga.) stirrup material combined with a welded assembly provides a strong, stable connection that holds up under sustained load conditions in joist-to-beam applications.

Specifications

• Model Number: WP310
• Brand: Simpson Strong-Tie
• Joist Size: 3 in. x 10 in.
• Description: Welded Top-Flange Joist Hanger
• Material - Stirrup: 97 mil (12 ga.)
• Finish: Simpson Strong-Tie Gray Paint; select models available hot-dip galvanized as a custom-made order
• Maximum Skew: Up to 84 deg.
• Maximum Slope: Up to 45 deg.
• Country of Origin: United States

Approved Applications

• Supporting joists on purlins or beams
• Wood-to-wood framing connections
• Wood-to-steel framing connections
• Cold-formed steel framing applications
• Skewed and/or sloped joist installations requiring angular flexibility

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.