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Hager BB1279 5" x 4-1/2" Ball Bearing Full Mortise Hinge
The Hager BB11279 5" x 4.5" is a premium, standard weight ball bearing hinge designed for medium-weight doors requiring a clean, professional look and smooth operation. Standing at a specialized 5-inch height, this hinge provides superior vertical support and weight distribution compared to standard 4.5" models. Manufactured from high-strength steel with a durable plated finish, it is the industry standard for commercial offices, hotels, and institutional buildings.
Professional Smooth-Action Performance
Equipped with two ball bearings, the BB1279 ensures nearly frictionless door movement, preventing the "binding" or squeaking often associated with plain bearing hinges. This 5-knuckle commercial hinge is engineered for doors requiring low-frequency service, providing a reliable and quiet swing for years to come. The non-rising removable pin features a button tip and plug, ensuring the pin stays securely in place during operation while remaining accessible for maintenance.
Heavy-Duty Commercial Specifications
This hinge features a robust .146 gauge thickness, making it sturdier than standard residential hardware. It is specifically designed for 1-3/4" thick doors and meets rigorous ANSI A8112 standards for quality and performance. Whether you are outfitting a new commercial facility or replacing worn hardware in a high-traffic hallway, the Hager BB1279 offers the industrial reliability your project demands.
Technical Specifications
| Feature | Specification |
| Model Number | Hager BB1279 |
| Dimensions | 5" Height x 4-1/2" Width (127mm x 114mm) |
| Hinge Type | Full Mortise - Ball Bearing |
| Material | Steel with Steel Pin |
| Gauge (Thickness) | 0.146" |
| Bearing Count | Two Ball Bearings |
| Standards | ANSI A8112 Compliant |
| Pin Style | Non-rising removable pin with button tip and plug |
| Door Thickness | Optimized for 1-3/4" (44mm) Doors |
| Application | Medium weight doors / Low frequency service |
Installation and Hardware
Every Hager BB1279 is furnished with a complete set of high-quality fasteners to ensure a permanent and professional mount:
- All Machine Screws: 1/2" 12-24 FPHM (Standard for metal frames and doors)
- All Wood Screws: 1-1/4" x 12 FPHW (Standard for wood door and frame applications)
| General - US Finishes | US26D - Satin Chrome or US10B - Oil Rubbed Bronze |
| Brand | Hager |
| Hinge Height | 5.0" Hi |
| Hinge Width | 4.5" Wi |
| Hinge Grade/Thickness | Standard Wt .119 to .146 |
| Hinge Type | Full Mortise |
| Hinge Options | Ball Bearing |
| Base Material | Steel |
| Hinge Corners | Square |
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