Hager 1129 NRP 4-1/2" Plain Bearing Half Mortise Hinge
The Hager 1129 NRP is a specialized half mortise hinge designed for heavy-duty industrial and commercial applications. This hinge is specifically engineered for use on medium-weight hollow metal doors paired with channel iron frames. Unlike standard hinges, the half mortise design is mortised into the edge of the door while being surface-mounted to the face of the frame, providing a robust solution for medium-frequency service environments.
Enhanced Security with Non-Removable Pin (NRP)
For exterior or outward-swinging doors, security is the top priority. The NRP (Non-Removable Pin) feature is a critical innovation that prevents unauthorized door removal. By utilizing a hidden set screw within the hinge barrel, the Hager 1129 NRP ensures the pin cannot be tapped out from the outside. This provides essential enhanced security and peace of mind, safeguarding against forced entry through hinge manipulation.
Durable Construction and Specialized Design
Constructed from high-strength steel with a steel pin, this 5-knuckle hinge features a beveled surface leaf for a professional, flush aesthetic on the frame face. The Hager 1129 is fully reversible, allowing for easy installation on both left- and right-hand doors. It is designed for 1-3/4" thick doors and meets rigorous ANSI A8233 standards for performance and reliability.
Note: For doors equipped with door closers, we recommend upgrading to ball bearing hinges to ensure optimal performance.
Technical Specifications
| Feature | Specification |
| Model Number | Hager 1129 NRP |
| Size | 4-1/2" (114mm) |
| Hinge Type | Half Mortise - 5 Knuckle - Plain Bearing |
| Mounting | Mortised (Door Edge) / Surface (Frame Face) |
| Material | Steel with Steel Pin |
| Gauge (Thickness) | 0.134" |
| Security Feature | Non-Removable Pin (NRP) |
| Standards | ANSI A8233 Compliant |
| Handing | Reversible |
| Door Thickness | Designed for 1-3/4" (44mm) |
Installation and Fasteners
The Hager 1129 is furnished with standard machine screws for a secure and permanent installation:
- Fasteners: 1/2" 12-24 FPHM (Flat Head Machine Screws)
Finish and Custom Options
Our stock finish is USP (Prime for Paint), allowing you to match any facility color scheme. Additional finishes and modifications are available via quote:
- Optional Finishes: Satin Bronze (US10), Antique Bronze (US10A), Oil Rubbed Bronze (US10B), and Satin Chrome (US26D).
| General - US Finishes | USP - Prime Painted |
| Brand | Hager |
| Hinge Height | 4.5" Hi |
| Hinge Grade/Thickness | Standard Wt .119 to .146 |
| Hinge Type | Half Mortise |
| Hinge Options | Plain Bearing, NRP (Non Removable Pin) |
| Base Material | Steel |
| Hinge Corners | Square |
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