National Mfg N276-980 Ss Square Corner Door Hinge 3x3

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N276-980 is a full-mortise stainless steel door hinge designed for demanding environments where corrosion resistance is critical. Measuring 3 inches x 3 inches with a square corner profile, this heavy-gauge hinge is built to handle industrial, commercial, and residential door applications. The stainless steel construction provides maximum protection against rust and corrosion, making it especially well-suited for marine settings and other outdoor exposures. A non-rising, removable pin simplifies installation and hinge alignment. A NIB on the bottom of the hinge leaf delivers a clean, finished appearance once installed.

This hinge is intended for use on doors in environments subject to moisture, salt air, or other corrosive conditions. It is appropriate for marine vessel doors, coastal residential entry doors, commercial exterior doors, and industrial facility doors where standard steel hardware would degrade prematurely. Each pack contains 3 hinges, sold per pack. Installation is performed by carpenters, millworkers, or general contractors working on door hanging in mortise-style applications.

Key Features

• Stainless steel construction for maximum corrosion resistance in marine and outdoor applications
• Full mortise design for flush, recessed installation
• Square corner profile for standard door frame compatibility
• Non-rising pin prevents hinge from riding up during door operation
• Removable pin for easier door hanging and hinge alignment
• Heavy-gauge material provides added strength and long-term durability
• NIB on bottom leaf for a finished, professional appearance

Compatibility

Designed as an OEM-style replacement or new-installation hinge for full-mortise door applications in industrial, commercial, and residential settings, particularly where corrosion resistance is required.

Installation Notes

Installation is a full-mortise application requiring a chisel or router to cut hinge mortises into both the door edge and the door frame jamb. Power down any electric door hardware and ensure the door is properly supported before removing existing hinges. Follow applicable local building codes for door hardware in commercial or industrial installations. The removable pin allows the door to be hung and removed without fully extracting the hinge leaves from the mortise.