The Simpson HGLTV3.518 HGLTV Top-Flange Joist Hanger is a heavy-duty connector built specifically for structural composite lumber header applications that require high load capacity. Simpson Strong-Tie engineered this top-flange hanger to provide dependable support underneath the joist, rafter, or beam, delivering a strong and reliable connection in demanding engineered wood installations. The top-flange nail holes are sized and precisely located to prevent degradation of the header due to splitting of laminations, and the Funnel Flange design allows for easy installation of beams - making this hanger a practical choice for engineered lumber framing where both performance and efficiency matter.

Key Features

• Top flange constructed from 3-gauge steel - provides the structural rigidity needed to handle high-load header applications without deformation under stress.
• Stirrup constructed from 7-gauge steel - offers a durable, stable cradle for the joist member while keeping overall hanger weight manageable during installation.
• Nail holes sized and precisely located to prevent lamination splitting - protects the integrity of the structural composite lumber header, reducing the risk of long-term degradation at the connection point.
• Funnel Flange design - guides beams into position quickly and accurately, reducing alignment time and simplifying installation in tight framing conditions.
• Compatible with weld-on applications - expands installation versatility for contractors working in steel-framed or hybrid structural assemblies.
• Web stiffeners required with I-joists - an important installation requirement buyers should plan for in advance, ensuring full structural integrity when used with I-joist members.
• Simpson Strong-Tie gray paint finish - provides a consistent, clean appearance and baseline surface protection suited for interior structural applications.

Why This Product

• Purpose-built for high-load engineered lumber headers - unlike general-purpose joist hangers, the HGLTV3.518 is specifically designed for structural composite lumber applications that demand greater load transfer, making it a dependable fit where standard hangers fall short.
• Dual-gauge steel construction balances strength and practicality - the 3-gauge top flange delivers the rigidity required at the bearing point, while the 7-gauge stirrup keeps the connector workable in the field, giving contractors a hanger that performs without being unnecessarily cumbersome.
• Lamination-protecting nail placement reduces long-term risk - because the fastener holes are engineered to prevent header splitting, installers can feel confident the connection will maintain its integrity over the life of the structure rather than introducing a failure point at the fastener locations.
• Weld-on capability adds flexibility for mixed-material framing - the ability to use this hanger in weld-on applications means it can serve a wider range of structural scenarios beyond standard nailed installations, reducing the need to source a separate connector for steel-integrated framing projects.

Specifications

• MPN: HGLTV3.518
• Member Size: 3-1/2 in. x 18 in.
• Gauge: Top flange - 3 gauge; stirrup - 7 gauge
• Coating: Simpson Strong-Tie Gray Paint
• Finish: Simpson Strong-Tie Gray Paint
• Country of Origin: United States

Approved Applications

• Structural composite lumber (SCL) header applications requiring high loads
• Engineered wood joist, rafter, and beam connections
• Weld-on applications
• I-joist installations (web stiffeners required)

Install With

• Install with (24) 0.162 in. x 3-1/2 in. Strong-Drive SCN Smooth-Shank Connector nails (Model: 16DHDG)

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What lumber member size is the HGLTV3.518 designed to support?

The HGLTV3.518 is designed for an actual joist size of 3-1/2 in. x 18 in., making it suitable for full-dimension engineered lumber members of that specific size.

Are web stiffeners required when using this hanger with I-joists?

Yes. Web stiffeners are required with I-joists using this hanger style. This is an important installation requirement to ensure structural integrity.

What fasteners should be used to install the HGLTV3.518?

Install with (24) 0.162 in. x 3-1/2 in. Strong-Drive SCN Smooth-Shank Connector nails (Model: 16DHDG) as specified by Simpson Strong-Tie.

Can the HGLTV3.518 be used in weld-on applications?

Yes. This hanger series may be used for weld-on applications, providing added versatility for a range of structural connection scenarios.

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