The Simpson BA310 top-flange joist hanger is a 12-gauge galvanized steel connector built for reliable framing connections with 3x10 nominal solid sawn lumber and engineered wood products. Part of the Simpson BA series, this one-piece hanger supports medium load conditions with solid sawn lumber and higher load conditions with engineered wood products, making it a versatile choice for residential and light commercial framing. Positive-angle nailing (PAN) accommodates both minimum nailing configurations for moderate loads and maximum nailing configurations for higher load demands, giving installers flexibility across a range of structural requirements.

Key Features

• One-piece 12-gauge steel construction - eliminates the cost and complexity of welded hangers, simplifying procurement and installation for framers and contractors
• Full-height joist flange that captures the top chord of the joist - prevents rotation and removes the need for web stiffeners, reducing material costs and labor on the job site
• Positive-angle nailing (PAN) with minimum and maximum nailing options - gives installers a straightforward path to meeting both moderate and higher load requirements without switching to a different hanger
• Top-flange design that installs over the supported member - speeds up installation and delivers a secure joist-to-header connection without additional hardware
• G90 zinc galvanized finish - provides corrosion resistance suited to framing environments where long-term durability matters
• Available in modified configurations for sloped and/or skewed members up to 45 deg. - accommodates non-standard framing conditions without requiring a custom-fabricated alternative

Why This Product

• Dual-application versatility - the BA310 handles both solid sawn lumber at medium loads and engineered wood products at higher loads, so one hanger model covers a broader range of framing scenarios on a single project
• Structural rotation control without extra parts - the full-height joist flange captures the top chord directly, preventing joist rotation and eliminating web stiffeners that add cost and installation time
• Cost-effective single-piece design - formed from one piece of 12-gauge steel rather than welded components, the BA310 keeps per-connection costs lower while maintaining structural integrity at the header-to-joist interface
• Flexible load management through nailing configuration - by switching between minimum and maximum nailing patterns using PAN, installers can dial in the right load capacity for the application without sourcing a heavier or more expensive connector

Specifications

• Model Number: BA310
• Nominal Member Size: 3x10
• Steel Gauge: 12-gauge
• W (in.): 2 9/16
• H (in.): 9 1/8
• B (in.): 3
• TF (in.): 2-1/2
• Coating / Finish: Zinc Galvanized, G90
• Country of Origin: United States

Approved Applications

• Solid sawn lumber framing connections at medium load conditions
• Engineered wood product (EWP) framing connections at higher load conditions
• Top-flange joist-to-header connections in residential and light commercial construction
• Applications requiring 3x10 nominal joist sizing

Installation Information

• Install with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 1-1/2 in. nails in the joist
• Top-flange design installs over the top chord of the supported member - no web stiffeners required
• One-piece construction simplifies installation compared to welded alternatives

• Other widths are available; specify W dimension (the minimum W dimension is 1 9/16").
  
• For modified hangers, fastener quantity listed in tables may need to increase depending on joist size, skew and slope. All modified hangers are 12 ga.
• Hangers may be modified for slopes and/or skews up to 45 deg.. The top flanges may be sloped as much as 35 deg. and may be open or closed up to 30 deg.. See Modifications and Associated Load Reductions under Specifications
• Contact us for Customizations and Special orders

Frequently Asked Questions

What size joist is the BA310 designed to fit?

The BA310 is designed for a nominal 3x10 member size, making it suitable for framing connections that use 3x10 solid sawn lumber or engineered wood products.

What type of nails should be used to install the BA310?

Install the BA310 with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 1-1/2 in. nails in the joist.

Can the BA310 be used with both solid sawn lumber and engineered wood products?

Yes. The BA310 is compatible with both solid sawn lumber and engineered wood product applications. It carries medium loads with solid sawn lumber and is capable of supporting higher loads when used with engineered wood products.

Is the BA310 available for sloped or skewed installations?

The standard BA310 is a straight hanger, but it is available for special order to accommodate sloped and/or skewed members if your application requires an angled connection.