National Marker N830320 Polished Brass Door Hinge 3-pack

Product Description

The NATIONAL MARKER N830320 is a 3.5-inch square polished brass door hinge sold in a 3-pack, designed for residential and light commercial door installations. Constructed from heavy-gauge cold-rolled steel with a polished brass finish, this hinge delivers structural durability alongside a clean, finished appearance. The 5-knuckle design and countersunk screw holes provide a flush, professional fit, while the removable pin simplifies door hanging and removal. Carpenters, general contractors, and skilled tradespeople use this hinge as a standard door hardware component in both new construction and retrofit applications.

This hinge is suited for interior and exterior door installations where a polished brass finish and square corner profile are specified. The 3-pack quantity supports single-door installations requiring three hinges, which is standard practice for most residential door heights. The nib detail on the hinge leaf contributes to a refined finished look once installed.

Key Features

• 3.5-inch square hinge profile with polished brass finish
• Heavy-gauge cold-rolled steel construction for added strength
• 5-knuckle design for smooth pivot action and finished appearance
• Countersunk screw holes for flush, secure fastening
• Removable pin for easier door installation and removal
• Sold as a 3-pack to cover a standard single-door application

Compatibility

Designed as a standard OEM-style replacement or new-installation hinge for residential and light commercial doors requiring a 3.5-inch square hinge with a polished brass finish.

Installation Notes

Installation is performed by carpenters or general contractors using a chisel, mallet, and screwdriver or drill with appropriate bits to mortise the hinge leaf into the door and jamb. Power down any associated door hardware systems before working on the door frame. Ensure mortise depth matches hinge leaf thickness for a flush fit. Follow local building code requirements for hinge placement and quantity on fire-rated or exterior doors.

Technical Specifications

• Hinge Size: 3.5 inches square
• Knuckle Count: 5 knuckle design
• Material: Heavy-gauge cold-rolled steel
• Finish: Polished brass
• Pin Type: Removable
• Package Quantity: 3-pack
• Weight: 1.336 pounds
• UPC: 00886780007664

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N830320