The Simpson HUC5.125/12 Concealed-Flange Heavy Face-Mount Joist Hanger by Simpson is engineered for structural applications that demand both additional strength and a clean finished appearance. Designed specifically for 5-1/8 in. glulam members, this heavy-duty hanger features concealed header flanges that keep connection hardware out of sight in exposed conditions - making it a practical choice for timber-frame, open-ceiling, and architecturally visible framing where structural integrity and visual detail both matter. Tested, load rated, and code compliant, the HUC-series is built for demanding wood-to-wood, wood-to-masonry, and wood-to-concrete installations.

Key Features

• Concealed header flanges - hide the hanger's connection points in exposed framing conditions, delivering cleaner visible lines without sacrificing load performance
• Extra optional triangle holes - give installers the flexibility to add fasteners and increase load capacity where project demands require it
• Tested, load rated, and code compliant - provides confidence that the connection meets recognized structural standards, simplifying approval on permitted projects
• Compatible with wood, masonry, and concrete headers - makes this hanger versatile across a wide range of construction types and substrate conditions
• 14-gauge steel construction - delivers the material thickness required for heavy-duty glulam beam connections where lighter hangers are not adequate
• Zinc Galvanized G90 coating - provides reliable corrosion resistance, extending service life in environments where moisture exposure is a concern

Why This Product

• Built for glulam and heavy structural members - with a seat width and height sized specifically for 5-1/8 in. glulam, this hanger is purpose-matched to engineered lumber applications rather than adapted from a general-purpose design
• Aesthetics without compromise - the concealed-flange design addresses a real-world challenge in exposed timber construction, allowing structural connections to meet both load requirements and finish expectations in the same product
• Flexibility for higher-load conditions - the optional triangle holes let contractors tailor the fastener pattern to the demands of the specific project, adding capacity where standard nailing patterns alone may not be sufficient
• Corrosion-resistant for lasting performance - the G90 galvanized finish means this hanger is not just protected at installation but continues to resist deterioration over the life of the structure, reducing long-term maintenance concerns

Specifications

• MPN: HUC5.125/12
• Member Size: 5-1/8 in. glulam
• Width: 5-1/4 in.
• Seat Depth: 2-1/2 in.
• Height: 10-1/4 in.
• Gauge: 14-gauge steel
• Finish: Zinc Galvanized, G90
• Coating: Zinc Galvanized, G90
• Install With: Install with (30) 0.162 in. x 3-1/2 in. nails (sold separately)
• Country of Origin: United States

Approved Applications

• Face-mounting wood joists to wood headers or beams
• Face-mounting wood joists to masonry
• Face-mounting wood joists to concrete
• Exposed structural conditions requiring concealed flanges for cleaner visual lines
• Heavy-duty structural applications demanding additional strength and safety factors

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What joist size is the HUC5.125/12 designed to fit?

The HUC5.125/12 is designed for a 5-1/8 in. glulam member, with a seat width of 5-1/4 in. and an overall height of 10-1/4 in.

What makes this hanger suitable for exposed structural conditions?

The HUC5.125/12 features concealed header flanges, which provide cleaner visible lines when the hanger is used in exposed conditions where aesthetics alongside structural performance are important.

What fasteners are required to install the HUC5.125/12?

Installation requires (30) 0.162 in. x 3-1/2 in. nails. Optional triangle holes are also available to provide additional load capacity.

Is the HUC5.125/12 corrosion resistant?

Yes. The HUC5.125/12 is manufactured from 14-gauge steel with a Zinc Galvanized G90 coating, providing reliable corrosion resistance for demanding structural applications.

Note: Product dimensions and/or nail holes may differ from picture. Please see the item description and Spec Sheet for specifications.