National Hardware N830-334 Door Hinge 3-1/2" Satin Brass Cold Rolled Steel 3-Pack 5/8" Radius The National Hardware N830-334 door hinge is a heavy-duty, full-mortise residential hinge crafted from cold-rolled steel with a refined satin brass finish. Measuring 3-1/2 inches square, it features a five-knuckle design, 5/8-inch radius round corners, and a removable flush pin for smooth operation and easy door removal. Six countersunk screw holes per leaf ensure secure, flush mounting in standard door and jamb preparations, while the robust construction supports up to 50 lbs per hinge?ideal for interior passage doors in homes. The satin brass finish offers a warm, decorative accent that complements traditional and transitional hardware, making this 3-pack a reliable, aesthetically pleasing choice for new installations or replacements. Features - Full-mortise hinge for standard interior residential door applications - Constructed from heavy-gauge cold-rolled steel for enhanced strength and durability - Five-knuckle design provides smooth, stable pivoting and long-term reliability - 5/8-inch radius round corners for modern, softened aesthetic and safe handling - Removable flush pin allows easy door removal without hinge disassembly - Six countersunk screw holes per leaf for secure, flush mounting - Satin brass finish delivers decorative warmth and corrosion resistance - Supports up to 50 lbs per hinge?suitable for solid-core and hollow-core doors - Includes mounting screws for immediate installation - 3-pack provides complete set for one door (hinges + spare) Specifications - Brand Name: National Hardware - Model Name: National Hardware N830-334 - Part Number: N830-334 - Product Type: Door Hinge - Hinge Type: Full-Mortise - Material: Cold Rolled Steel - Finish: Satin Brass - Color: Satin Brass - Door Leaf Height: 3-1/2 in - Width: 3-1/2 in - Corner Radius: 5/8 in - Pin Type: Removable, Flush - Number of Knuckles: 5 - Number of Mounting Holes: 6 per leaf - Safe Working Load: 50 lb per hinge - Spring Return: No - Hardware Included: Yes - Number in Package: 3 - Packaging Type: Carded - Each Weight: 1.3 lb - Country of Origin: China - UPC: 886780010275 - Manufacturer: National Manufacturing Sales Co. Product Application These hinges are used by carpenters, contractors, and DIY homeowners for installing or replacing hinges on interior residential doors such as bedrooms, bathrooms, and closets. The full-mortise design ensures a clean, professional appearance with the hinge recessed flush into the door edge and frame, while the 5/8-inch radius corners align with modern door styles featuring softened edges. The removable pin simplifies painting, moving furniture, or seasonal maintenance, and the 50-lb capacity per hinge safely supports standard 1-3/8" to 1-3/4" thick doors. Trusted for strength, smooth operation, and decorative finish, this satin brass hinge set delivers lasting performance and refined detail in everyday living spaces.