National Mfg N273-904 Plain Steel Weldable Door Hinge 3x3

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N273-904 is a plain steel weldable door hinge built for surface-mount applications on metal doors and frames. The non-swaged, heavy-duty design is intended specifically for welding directly onto metal surfaces rather than screw fastening, making it a reliable choice where a flush, permanent attachment is required. The hinge features a tight, non-removable pin that resists tampering and adds security in applications where pin removal would be a vulnerability. Each pack contains one hinge. Sold in a package quantity of 10 units, boxed loose. This hinge is a straightforward, functional component for metal fabrication and heavy door installations.

This hinge is suited for industrial, commercial, and utility applications involving metal doors, gates, enclosures, and fabricated steel frames. The weldable design is commonly specified by metal fabricators, ironworkers, and maintenance trades working on equipment enclosures, access panels, utility doors, and similar metal structures. The non-removable pin configuration makes it appropriate for exterior or security-sensitive installations where a standard removable-pin hinge would not be acceptable.

Key Features

• Non-swaged design allows direct surface welding onto metal doors and frames
• Non-removable tight pin increases security and resists unauthorized disassembly
• Plain steel construction suited for welded metal fabrication projects
• Heavy-duty build appropriate for solid metal door and gate applications
• 1 hinge per pack, sold in a package quantity of 10 units

Compatibility

Designed as a weldable replacement or new-installation hinge for metal doors, gates, enclosures, and fabricated steel frames requiring a surface-applied, non-removable-pin hinge.

Installation Notes

Installation is performed by welding the hinge leaves directly to the metal door and frame surfaces — no drilling or screwing is required. Metal fabricators and ironworkers should follow applicable welding codes and ensure proper fit and alignment before completing final welds. Power down or de-energize any associated electric or automated door hardware before beginning work. Do not attempt to modify the non-removable pin or force pin removal, as this will compromise hinge integrity.