The Simpson THGW4-3 Truss Hanger for Girders is an extra-high-capacity, bolted wraparound hanger engineered for the demanding task of installing multi-ply girder trusses. This welded hanger attaches directly to a vertical web and features a distinctive wraparound shape that delivers superior load support through a double-shear design. Built to handle heavy structural loads with precision and reliability, the THGW4-3 is a trusted solution for professional builders, engineers, and contractors working on complex truss framing assemblies.

Key Features

• Extra-High-Capacity Design: Engineered specifically for multi-ply girder truss applications requiring maximum load performance.
• Wraparound Shape: Unique geometry supports higher loads by distributing stress more effectively across the connection point.
• Double-Shear Design: Increases shear capacity for improved structural integrity under heavy loading conditions.
• Welded Construction: Factory-welded hanger body ensures consistent quality and strength throughout the assembly.
• Vertical Web Attachment: Attaches to a vertical web for precise, stable installation in girder truss systems.
• Bolted Connection: Utilizes machine bolts for a secure, rigid connection to the carrying member.
• Simpson Strong-Tie Gray Paint Finish: Durable factory-applied gray paint coating provides corrosion resistance for interior framing environments.
• Made in the United States: Manufactured domestically to meet strict quality and performance standards.

Specifications

• Model Number: THGW4-3
• Manufacturer Part Number (MPN): THGW4-3
• Brand: Simpson Strong-Tie
• Gauge: 3
• Width: 6 9/16 in.
• Height: 25 in.
• Coating / Finish: Simpson Strong-Tie Gray Paint
• Hanger Type: Wraparound, Bolted Truss Hanger
• Connection Method: Bolted
• Country of Origin: United States

Approved Applications

• Installation of multi-ply girder trusses in residential and commercial framing
• Structural connections requiring extra-high-capacity hanger support
• Vertical web attachment applications in heavy-load truss systems
• Double-shear bolted connections for girder truss framing assemblies

Installation Notes

• Install with 10d common nails and 3/4 in. machine bolts.
• All multiple members must be fastened together to act as a single unit.
• Maximum 11 7/8 in. bottom chord in the carrying member to allow for the minimum bolt end distance.
• Bolts must be installed symmetrically when fewer than the maximum number of bolts are used on the backplate.
• Girders must have adequate lateral bracing to prevent excessive displacement due to secondary torsional stresses (refer to ANSI/TPI 1-2014 Section 7.5.3.5).

Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.

Frequently Asked Questions

What type of truss application is the THGW4-3 designed for?

The THGW4-3 is engineered specifically for multi-ply girder truss applications. It is an extra-high-capacity hanger intended for heavy structural loads in complex truss framing assemblies, making it suitable for professional builders, engineers, and contractors working on demanding girder truss installations.

How does the wraparound design benefit the connection?

The wraparound shape distributes stress more effectively across the connection point, supporting higher loads than a standard hanger profile. Combined with its double-shear design, this geometry increases shear capacity for improved structural integrity under heavy loading conditions.

How is the THGW4-3 attached to the carrying member?

The THGW4-3 uses machine bolts to create a secure, rigid bolted connection to the carrying member. The hanger itself attaches to a vertical web, providing precise and stable installation within the girder truss system.

Is the THGW4-3 suitable for exterior or exposed applications?

The THGW4-3 features a factory-applied Simpson Strong-Tie gray paint finish, which provides corrosion resistance suited for interior framing environments. It is not described as rated for exterior or fully exposed conditions, so its use should be limited to interior applications consistent with that coating specification.