National Mfg N830-429 4 in Full Mortise Door Hinge Black 15 Pack

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N830-429 is a full mortise door hinge designed for residential and light commercial door installations. Built from heavy-gauge cold-rolled steel, this hinge delivers reliable strength in high-cycle applications. It measures 4 inches in length with 5/8 inch radius round corners, giving it a clean, finished profile that sits flush with the door and frame. The five-knuckle construction distributes load evenly across the barrel. A flush pin delivers a refined appearance on finished doors. This package contains 15 hinges, making it practical for multi-door projects or service stock.

This hinge is suited for standard residential interior and exterior door installations where a mortise-style hinge is required. The countersunk screw holes allow fasteners to sit flush with the hinge leaf, preventing interference with door swing and ensuring a tight fit against the door edge and frame. The removable pin simplifies door hanging and removal, a practical feature for finish carpenters, door installers, and general contractors working on new construction or renovation projects.

Key Features

• Heavy-gauge cold-rolled steel construction for added strength and durability
• Five-knuckle, full mortise design for even load distribution
• 5/8 inch radius round corners for a clean, finished appearance
• Flush pin for a refined look on finished door installations
• Countersunk screw holes allow fasteners to sit flush with the hinge leaf
• Removable pin for easier door hanging and removal during installation

Compatibility

Designed as an OEM-style replacement or new-installation hinge for standard residential and light commercial full mortise door applications requiring a 4 inch hinge with 5/8 inch radius corners.

Installation Notes

Installation is typically performed by carpenters, door installers, or general contractors using a chisel and drill to cut the mortise pocket in the door edge and frame jamb. Power down any automatic door operators before servicing the door assembly. Ensure the hinge mortise depth matches the hinge leaf thickness to achieve a flush surface. Follow local building codes for hinge count and placement requirements on fire-rated or exterior door assemblies.