National Mfg N225-961 Ss Full Mortise Hinge 3-pack

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N225-961 is a stainless steel full mortise hinge designed for doors and enclosures where corrosion resistance and long-term durability are priorities. The five-knuckle construction and heavy-gauge stainless steel material deliver structural strength in demanding environments. Each hinge measures 5/8 inches by 3-1/2 inches with a 5/8-inch radius on the round corners for a clean, finished look. The non-rising pin stays flush during operation, and screw holes are countersunk for a flat, secure mount. A nib on the hinge face contributes to a polished installed appearance. This package contains three hinges. Installers in commercial, residential, and light industrial settings will find this hinge suited to interior and exterior door applications where moisture or corrosive conditions are a concern.

This hinge is appropriate for use in residential entry doors, utility enclosures, and commercial door frames where full mortise installation is specified. The stainless steel construction makes it suitable for coastal environments, mechanical rooms, pool enclosures, and other high-humidity or corrosive-exposure settings. The full mortise design requires a routed mortise in both the door edge and door frame, making it a standard specification for solid wood and metal-framed door assemblies. Each pack includes three hinges, which is a common quantity for a standard single-door installation.

Key Features

• Stainless steel construction for maximum corrosion resistance in high-humidity and outdoor environments
• Five-knuckle, full mortise design for flush, structurally sound installation
• Heavy-gauge material provides added load-bearing strength
• Non-rising pin maintains a flush profile during repeated door operation
• 5/8-inch radius round corners with nib detail for a finished appearance
• Countersunk screw holes allow fastener heads to sit flush with the hinge leaf

Compatibility

Designed as an OEM-style replacement or new-installation hinge for full mortise door applications requiring a 5/8-inch by 3-1/2-inch hinge footprint in residential, commercial, or light industrial settings.

Installation Notes

Full mortise hinges require a routed mortise pocket in both the door edge and the door frame jamb to seat the hinge leaf flush. A chisel and router are standard tools for this work. Power down any electric strike or access control hardware associated with the door before beginning work. Follow applicable building codes for door hardware installation in commercial occupancies.