Product Description
The Simpson 3x4 Face-Mount Joist Hanger U34 is a precision-formed, 16-gauge steel connector engineered by Simpson for dependable joist-to-header connections in wood-framed construction. Its face-mount design accommodates a wide range of lumber types - from solid sawn and rough lumber to engineered wood products - making it a versatile, go-to fastening solution for framing professionals and contractors who need consistent, code-worthy performance on the job.
Key Features
- Face-mount design for joist-to-header connections - installs directly against the header face, keeping framing tight and aligned without requiring special blocking or extra hardware
- Precision-formed from 16-gauge steel - provides a consistent, accurate fit across applications, reducing installation adjustments and supporting reliable load transfer
- G90 Zinc Galvanized coating - delivers corrosion resistance suited to the demands of wood-framed construction environments, helping the hanger maintain structural integrity over time
- Compatible with solid sawn lumber in Douglas Fir/Southern Pine and Spruce-Pine-Fir/Hem-Fir species groups - works with the most widely used framing lumber species, so it fits naturally into standard residential and light commercial projects
- Also approved for rough lumber across DF, SP, SPF, and HF species groups - gives framers flexibility when working with less-finished stock without sacrificing rated performance
- Accepts engineered wood products including I-joists, glulam beams, and structural composite lumber (SCL) - keeps the same hanger working across mixed-material framing assemblies, reducing the need for multiple connector types on a single job
Why This Product
- Broad lumber compatibility in one connector - the U34 is engineered and load-rated for solid sawn lumber, rough lumber, I-joists, glulam, and SCL, so a single hanger type covers the range of materials a framing crew is likely to encounter rather than requiring separate connectors for each application
- Trusted Simpson engineering - designed and manufactured by Simpson, a name with a long-standing reputation in structural connectors, giving contractors confidence that load tables and installation guidance are backed by thorough testing
- Made in the United States - domestic production supports consistent quality control and reliable material sourcing, which matters on projects where documentation of origin is a specification requirement
- Configurable options available - custom U hanger configurations can be arranged for non-standard framing situations, making this product a practical fit for both routine builds and projects with unique structural demands
Specifications
- Model No.: U34
- Gauge (Ga.): 16
- Width (W): 2-9/16 in.
- Height (H): 3-3/8 in.
- Seat Width (B): 2 in.
- Coating/Material: Zinc Galvanized, G90
- Country of Origin: United States
Approved Applications
- Joist-to-header connections in wood-framed construction
- Solid sawn lumber - Douglas Fir/Southern Pine (DF/SP)
- Solid sawn lumber - Spruce-Pine-Fir/Hem-Fir (SPF/HF)
- Rough lumber - DF, SP, SPF, and HF species groups
- Engineered wood products including I-joists, glulam beams, and structural composite lumber (SCL)
- Contact us for Configurable Options and Special orders
- Refer to technical bulletin for ease of ordering a Custom U hanger
Load Tables / Values / Installation
- Face-Mount Hangers - Solid Sawn Lumber (DF / SP) Tables
- Face-Mount Hangers - Solid Sawn Lumber (SPF / HF) Tables
- Face-Mount Hangers - Rough Lumber (DF / SP / SPF / HF) Tables
- Face-Mount Hangers - I-Joists, Glulam and SCL Tables
Downloads and Resources
- Face-Mount Hangers - Solid Sawn Lumber (SPF / HF) Tables
- Face-Mount Hangers - Rough Lumber (DF / SP / SPF / HF) Tables
- Face-Mount Hangers - Solid Sawn Lumber (DF / SP) Tables
- Face-Mount Hangers - I-Joists, Glulam and SCL Tables
Note: Product dimensions and/or Nail or Screw holes may differ from picture. Please see item description for specifications.
Frequently Asked Questions
What lumber species is the U34 joist hanger compatible with?
The U34 is compatible with a wide range of lumber types, including solid sawn lumber in Douglas Fir/Southern Pine (DF/SP) and Spruce-Pine-Fir/Hem-Fir (SPF/HF) species groups, rough lumber across DF, SP, SPF, and HF groups, as well as engineered wood products such as I-joists, glulam beams, and structural composite lumber (SCL). Refer to the load tables in the Downloads section for species-specific values.
What are the dimensions of the Simpson U34 hanger?
The U34 has a width (W) of 2-9/16 in., a height (H) of 3-3/8 in., and a seat width (B) of 2 in. It is precision-formed from 16-gauge steel.
What type of corrosion protection does the U34 have?
The U34 features a G90 Zinc Galvanized coating, which provides a durable layer of corrosion resistance suited for use in wood-framed construction environments.
Are custom or configurable versions of the U34 available?
Yes, configurable options and custom U hanger configurations are available. Use the.
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