Hager BB1279 NRP SH 4-1/2" x 4-1/2" Security Stud Hinge – US26D
The Hager BB1279 NRP SH is an elite-level Full Mortise Ball Bearing Hinge designed for high-security commercial and residential applications. Measuring 4.5" x 4.5" and finished in a sleek Satin Chrome (US26D), this hinge integrates two distinct security features: the Non-Removable Pin (NRP) and the Security Stud (SH). This dual-layer protection makes it the ideal choice for outswinging doors, ensuring the door remains anchored even if the hinge knuckles are attacked or the pin is tampered with.
Triple-Layer Protection: Ball Bearing, NRP, and Security Stud
The Hager BB1279 NRP SH is engineered to provide superior smooth operation while maintaining a fortress-like grip on your door opening.
- Security Stud (SH): This feature includes a 3/16" (4.8 mm) projection on one leaf that locks into a hole on the opposite leaf when the door is closed. Even if the hinge pin is completely removed, the door leaves remain mechanically interlocked, preventing the door from being lifted out of the frame.
- Non-Removable Pin (NRP): A specialized set screw is located inside the hinge barrel. Once tightened against the grooved pin, it is only accessible from the inside when the door is open, preventing unauthorized pin removal from the exterior.
- Premium Ball Bearings: Equipped with two precision ball bearings, this hinge is built for medium-weight doors and doors equipped with automatic closers, reducing friction and preventing the door from sagging over time.
- Fire-Rated Reliability: Certified to meet UL standards for a 3-hour fire rating, this hinge complies with NFPA80 regulations for fire-door assemblies.
Technical Specifications
| Feature | Details |
| Model | Hager BB1279 NRP SH |
| Dimensions | 4-1/2" x 4-1/2" (114 mm x 114 mm) |
| Hinge Type | Full Mortise / Ball Bearing |
| Metal Thickness | .134 Gauge (Standard Weight) |
| Finish | US26D (Satin Chrome) |
| Material | Steel with Steel Pin |
| Knuckles | 5-Knuckle Design |
| Security Features | NRP (Non-Removable Pin) & SH (Security Stud) |
| ANSI Standard | Meets ANSI A8111 |
| Fire Rating | UL Listed (3-Hour Fire Rated) |
| Door Thickness | Designed for 1-3/4" (44 mm) Doors |
Installation & Fastener Details
The BB1279 NRP SH is supplied with a comprehensive fastener pack to suit both wood and metal frames.
- Standard Fasteners: Furnished with all wood screws (1-1/4" x 12 FPHW) and all machine screws (1/2" 12-24 FPHM).
- Security Fasteners: For maximum tamper resistance, Torx or Spanner Head security screws are available for an additional charge.
- Smooth Maintenance: Features a non-rising removable pin with a button tip and plug for a clean, professional appearance.
The Ultimate Security Choice for Outswing Doors
For property owners and contractors, the Hager BB1279 NRP SH is a high-intent hardware solution for exterior storage rooms, commercial entrances, and any outswinging door where the hinges are exposed to the public. By combining the mechanical lock of the Security Stud with the tamper-resistance of the NRP, Hager provides unmatched peace of mind without sacrificing the durability of a ball bearing hinge.
Ideal Applications:
- Exterior Commercial Doors: Protecting outswinging exits against forced entry.
- UL Fire-Rated Openings: Ensuring life-safety compliance in schools and hospitals.
- High-Security Areas: Preventing door removal in IT rooms or pharmaceutical storage.
- Medium-Frequency Entrances: Offering smooth operation for standard office and retail doors.
| General - US Finishes | US26D - Satin Chrome |
| 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 | Ball Bearing, NRP (Non Removable Pin), SH or SSF (Security Stud) |
| Base Material | Steel |
| Hinge Corners | Square |
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