National Marker N273904 Weldable Door Hinge 3 Inch Steel

Product Description

The NATIONAL MARKER N273904 is a 3-inch square, plain steel weldable door hinge designed for surface mounting on metal applications. Built from cold-rolled steel with a steel pin, this heavy-duty, nonswaged hinge is engineered for permanent installation by welding directly to metal surfaces. The nonremovable, tight-fit pin provides added security in demanding applications where hinge removal is not acceptable. At 0.408 pounds, it is a compact but sturdy component suited for gates, enclosures, access panels, and metal doors in commercial and industrial settings. Tradespeople working with metal fabrication or structural steel installations will find this hinge appropriate for a wide range of weld-on door and panel projects.

This hinge is intended for surface-mount weld applications on metal doors, frames, gates, utility enclosures, and access panels. It is appropriate for both new fabrication and retrofit work where a secure, nonremovable pivot point is required. The plain steel finish makes it well suited for environments where the hinge will be painted over or where bare steel is acceptable. It is sold individually and is compatible with applications requiring a 3-inch square hinge footprint.

Key Features

• Nonswaged design for direct surface application by welding to metal
• Nonremovable pin for enhanced security in controlled-access applications
• Tight pin fit reduces play and improves hinge stability
• Cold-rolled steel construction with plain steel finish
• 3-inch square profile for compact, heavy-duty pivot points
• Catalog model No. 560

Compatibility

Designed as a weld-on surface-mount hinge for metal doors, gates, and enclosures requiring a 3-inch square hinge with a nonremovable pin. Suitable for applications where welding to metal is the intended installation method.

Installation Notes

Installation requires welding equipment and should be performed by a qualified welder or metal fabricator. Ensure all work surfaces and surrounding materials are clear of flammable materials before beginning any welding operation. The nonremovable pin means the hinge should be positioned and aligned correctly before final weld, as it cannot be disassembled after installation. Follow applicable local codes and safety standards for welding and metalwork.

Technical Specifications

• Size: 3 inches square
• Material: Cold-rolled steel body, steel pin
• Finish: Plain steel
• Pin Type: Nonremovable, tight fit
• Hinge Style: Nonswaged, surface mount weld-on
• Weight: 0.408 pounds
• Catalog Model: 560
• UOM: Each

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N273904