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Hager 1279 4-1/2" x 4-1/2" Full Mortise - Plain Bearing Hinge, Steel with Plated Finish
The Hager 1279 is a commercial-grade Full Mortise Plain Bearing Hinge designed for standard-weight doors in professional and institutional settings. Engineered for 1-3/4" thick doors, this 4.5" x 4.5" steel hinge is the industry benchmark for reliability on doors requiring low-frequency service. Featuring a robust five-knuckle design and a precision-stamped square corner profile, the Hager 1279 meets the rigorous ANSI A8133 standard, ensuring architectural consistency and structural integrity for your facility's interior openings.
Professional Strength and Versatility
The Hager 1279 series provides a clean, flush-mounted pivot point for medium-weight hollow metal or solid core wood doors that do not require the continuous load-bearing support of ball bearings.
- Heavy-Duty Steel Construction: Built from high-quality steel with a matching steel pin, providing a durable and rigid foundation for standard commercial door frames.
- Non-Rising Removable Pin: Equipped with a button tip and plug, the pin is engineered to stay seated during standard operation but can be removed easily for door hanging or maintenance.
- Universal Fastener Pack: Each hinge is furnished with a complete set of all wood screws (1-1/4" x 12 FPHW) and all machine screws (1/2" 12-24 FPHM) to accommodate any mounting surface.
- Custom Options Available: For specialized projects, this hinge can be ordered via quote with wide throw modifications, hospital tips, or decorative ball and acorn tips.
Technical Specifications
| Feature | Details |
| Model | Hager 1279 |
| Hinge Type | Full Mortise / Plain Bearing |
| Dimensions | 4-1/2" x 4-1/2" (114 mm x 114 mm) |
| Metal Thickness | .134 Gauge (Standard Weight) |
| Material | Steel with Steel Pin |
| ANSI Standard | ANSI A8133 |
| Door Thickness | Standard 1-3/4" (44 mm) |
| Frequency | Low Frequency / Medium Weight |
| Pin Style | Non-rising removable pin with button tip and plug |
Application and Safety Notes
Choosing the correct hinge for your opening is vital for both door longevity and building code compliance:
- Door Closers: Per Hager recommendations, doors equipped with automatic closing devices should utilize ball bearing hinges (such as the Hager BB1279) to manage the increased lateral stress.
- Fire-Rated Openings: For UL Fire Rated Doors, ball bearing hinges are required to ensure the door remains functional during extreme heat events.
- Specialty Prep: Round corners (1/4" or 5/8" radius) and custom heights/widths are available as quoted options to match existing frame preps.
Why Choose the Hager 1279 4.5" Hinge?
For commercial contractors and facility engineers, the 4-1/2" Hager 1279 represents a high-intent hardware choice that offers the perfect balance of budget and performance. Its standard template hole pattern makes it an ideal replacement hinge for existing hollow metal frames, while the .134 thickness provides the heft needed for larger commercial door leaves. Whether you are outfitting a new office complex or maintaining a school facility, Hager’s legacy of American-engineered hardware ensures a smooth, silent operation.
Ideal Applications:
- Commercial Office Interiors: Durable support for private offices and conference rooms.
- Utility and Storage Rooms: A cost-effective solution for low-traffic interior doors.
- Hotel Guest Rooms: Providing a professional, flush-fit appearance for heavy wood doors.
- Hollow Metal Frames: Seamless installation with included machine screws.
| General - US Finishes | US26D - Satin Chrome or US26 - Polished Chrome or US15 - Satin Nickel or US3 - Polished Brass or US4 - Satin Brass or US10 - Satin Bronze or US10B - Oil Rubbed Bronze or USP - Prime Painted |
| Brand | Hager |
| Hinge Height | 4.5" Hi |
| Hinge Width | 4.5" Wi |
| Hinge Grade/Thickness | Standard Wt .119 to .146 |
| Hinge Type | Full Mortise |
| Hinge Options | Plain Bearing |
| Base Material | Steel |
| Hinge Corners | Square |
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