National Marker N830231 Satin Brass Door Hinge 4 Inches

Product Description

The NATIONAL MARKER N830231 is a 4-inch square corner door hinge finished in satin brass, designed for use on interior residential doors. Constructed from steel, it provides durable pivot support for standard interior door applications. The hinge features a removable pin, which simplifies installation and removal without requiring specialty tools. Mounting screws are included, allowing the installer to complete the job without sourcing additional hardware. This type of hinge is commonly installed by residential carpenters, general contractors, and experienced DIYers during new construction or door replacement projects.

This hinge is suited for interior residential door installations where a square corner profile is required. The satin brass finish complements a range of door hardware finishes commonly found in residential settings. It is sold individually, making it practical for single-door replacements or supplemental hinge additions on existing door frames.

Key Features

• Square corner profile for standard residential interior door frames
• Satin brass finish for a clean, residential-appropriate appearance
• Removable pin for straightforward installation and removal
• Steel construction for reliable, long-term pivot support
• Mounting screws included — no additional hardware required

Compatibility

Designed as an OEM-style replacement and standard-fit hinge for interior residential doors requiring a 4-inch square corner hinge. Referenced as National Model SPB512 in supplier documentation.

Installation Notes

Installation is typically performed by a carpenter or general contractor using a chisel, drill, and screwdriver to mortise the hinge leaf into the door and frame. Power down any adjacent electric strike or access control hardware before beginning work on the door assembly. Ensure the door is properly supported during hinge replacement to prevent damage to the frame or door slab. Follow local building codes for interior door hardware requirements where applicable.

Technical Specifications

• Hinge Size: 4 inches
• Corner Type: Square
• Finish: Satin Brass
• Material: Steel
• Pin Type: Removable
• Weight: 0.559 pounds
• UPC: 00886780009712

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N830231