National Marker N830402 Square Door Hinge 4 in Oil Rubbed Bronze 3pk

Product Description

The NATIONAL MARKER N830402 is a 4-inch square corner door hinge finished in oil rubbed bronze, sold in a 3-pack. Built from heavy-gauge cold-rolled steel, it delivers structural integrity for residential and light commercial door installations. The full mortise, 5-knuckle design seats flush into the door and frame for a clean, finished look. A removable pin simplifies door hanging and removal. Counter-sunk screw holes allow fasteners to sit flush, maintaining the finished appearance of the hinge throughout its service life.

This hinge is suited for interior and exterior door installations where a square corner, full mortise hinge is required. The oil rubbed bronze finish makes it appropriate for decorative door hardware applications in residential construction and remodeling. It is typically installed by carpenters, general contractors, or experienced DIYers performing door hanging or replacement work. The 3-pack quantity supports single or double door setups with a spare included.

Key Features

• Heavy-gauge cold-rolled steel construction for added strength and durability
• Full mortise, 5-knuckle design for secure, low-profile door mounting
• Square corners for traditional door frame fitment
• Removable pin for easier door installation and removal
• Counter-sunk screw holes allow flush fastener seating
• Oil rubbed bronze finish for a clean, finished appearance

Compatibility

Designed as an OEM-style replacement or new-installation hinge for standard full mortise door applications requiring a 4-inch square corner hinge.

Installation Notes

Installation is typically performed by carpenters or general contractors using a chisel, mallet, and screwdriver or drill. The door and frame mortise cutouts should be sized to match the hinge leaf dimensions before mounting. Ensure the door is properly supported during hinge installation to prevent binding or misalignment. The removable pin allows the door to be hung and removed independently of the frame-side leaf.

Technical Specifications

• Hinge Size: 4 inches
• Corner Style: Square
• Knuckle Count: 5
• Hinge Type: Full Mortise
• Material: Heavy-gauge cold-rolled steel
• Finish: Oil Rubbed Bronze
• Pin Type: Removable
• Package Quantity: 3 pack
• Package Weight: 1.725 pounds
• UPC: 00886780020052

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N830402