Description
The NATIONAL MFG/SPECTRUM BRANDS HHI N830-402 is a 4-inch oil rubbed bronze security hinge built for doors that need a stronger, more tamper-resistant mounting solution. Constructed from heavy gauge cold rolled steel, this full mortise hinge features a flush pin design for a clean finished appearance and a 5-knuckle configuration that distributes load evenly across the door frame. With a rated safe working load of 55 pounds, it is suited for interior and exterior door applications where reliability and security are the priority. Fasteners are included, and the removable pin allows for straightforward installation and door removal when needed.
This hinge is intended for residential and light commercial door installations. The square corner design and full mortise configuration make it compatible with standard door and frame preparations. It arrives in a carded 5-pack, making it a practical choice for new construction, remodel work, or replacing worn hardware on multiple doors in a single job. Installation is performed by carpenters, general contractors, and skilled handymen working on prehung or site-hung door assemblies.
Key Features
- Heavy gauge cold rolled steel construction for added strength and durability
- Oil rubbed bronze finish for a consistent, finished appearance
- Flush pin design maintains clean aesthetics on the finished face
- 5-knuckle configuration provides even load distribution
- 55-pound safe working load rating
- Countersunk screw holes with fasteners included
- Removable pin for easy door installation and removal
Compatibility
Designed as an OEM-style replacement or new-installation security hinge for standard full mortise door applications with square corner preparation.
Installation Notes
Installation is typically performed by a carpenter or general contractor using a chisel, mallet, and screwdriver or drill with appropriate bits. Power down any electric strike or access-control hardware on the door circuit before beginning work. Ensure the mortise pocket is cut to the correct depth so the hinge leaf sits flush with the door and frame face. Follow all applicable local building codes for door hardware installation.
Technical Specifications
- Hinge Size: 4 inches
- Finish: Oil Rubbed Bronze
- Material: Heavy Gauge Cold Rolled Steel
- Knuckle Count: 5
- Design Type: Full Mortise, Square Corner
- Safe Working Load: 55 pounds
- Package Quantity: 5
- Unit of Measure: EA
- Weight: 8.35 pounds
Standard Information
- Brand: NATIONAL MFG/SPECTRUM BRANDS HHI
- Manufacturer Part Number: N830-402
