National Mfg N184-572 Mortise Spring Hinge 4x4 Dull Brass

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N184-572 is a mortise spring hinge designed for self-closing door applications in residential and light commercial settings. Measuring 4 inches by 4 inches, this hinge uses an internal spring mechanism to automatically return a door to the closed position after each use. It ships with mounting screws included and features a dull brass finish for a traditional, low-sheen appearance. Licensed carpenters, finish contractors, and experienced door installers are the primary installers of this hardware type.

This mortise spring hinge fits standard interior and exterior door frames that accept a 4-inch by 4-inch mortise hinge profile. It is well suited for residential entry points, utility rooms, and commercial corridor doors where codes or building requirements call for self-closing function. The dull brass finish coordinates with similarly finished door hardware. Each package contains one hinge with screws, sold as a single-pack unit.

Key Features

• Internal spring mechanism provides automatic self-closing door action
• 4 inches x 4 inches mortise profile fits standard door preparations
• Dull brass finish delivers a traditional, matte appearance
• Mounting screws included — no separate hardware required
• Single-pack format for targeted single-door replacement or new installs

Compatibility

Designed as an OEM-style replacement or new-install mortise spring hinge for standard residential and light commercial doors requiring a 4-inch by 4-inch mortise hinge cutout.

Installation Notes

Installation is typically performed by a finish carpenter or general contractor using a chisel, mallet, and screwdriver or drill driver. Ensure the door is properly supported and the mortise pocket is correctly sized before seating the hinge leaf. Adjust spring tension only per the manufacturer guidance provided with the hinge, and verify the door swings and latches correctly before finalizing the installation. Follow applicable local building codes for self-closing door requirements in fire-rated or egress-path applications.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.