National Marker N830230 Square Corner Door Hinge Satin Brass

Product Description

The NATIONAL MARKER N830230 is a square corner door hinge designed for residential interior door installations. Finished in satin brass, it measures 3.5 inches and is constructed from steel for durable everyday use. The hinge features a removable pin, simplifying installation and allowing for door removal without full hardware disassembly. Mounting screws are included. This part is sold individually and is appropriate for interior passage doors in residential settings where a square corner profile is required. Licensed contractors and skilled trade installers handling finish carpentry or door hanging work will find this a straightforward OEM-style replacement or new-install component.

This hinge is suited for interior residential door applications requiring a square corner profile and a satin brass finish. It is commonly specified on bedroom, closet, hallway, and utility room doors. The removable pin design allows the door to be lifted free of the frame without removing the hinge leaves from the jamb or door, which is useful during door fitting and finish work. Compatible with standard residential door framing and door edge preparations.

Key Features

• Square corner profile for flush, clean installation on standard residential interior doors
• Satin brass finish for a neutral, widely compatible appearance
• Removable pin allows door removal without disturbing mounted hinge leaves
• Mounting screws included — no separate hardware required
• Steel construction for lasting structural integrity
• Sold individually; minimum purchase quantity of 3 units

Compatibility

Designed as an OEM-style replacement or standard installation hinge for interior residential doors requiring a 3.5-inch square corner hinge in a satin brass finish. Referenced under National Model SPB512.

Installation Notes

Installation is typically performed by carpenters, general contractors, or finish tradespeople during door hanging or hardware replacement. Power down any electric strike or access control hardware associated with the door before beginning work. Use a sharp chisel to mortise the hinge leaf flush with the door edge and jamb face to ensure proper door swing and latch alignment. Follow local building codes for fire-rated door assemblies, which may require specific hinge ratings and quantities.

Technical Specifications

• Size: 3.5 inches
• Corner Style: Square corner
• Finish: Satin brass
• Material: Steel
• Pin Type: Removable
• Weight: 0.422 pounds
• Unit of Measure: Each
• Minimum Purchase Quantity: 3
• UPC: 00886780009705

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N830230