McKinney T4A3386-4-1/2x4-NRP-US32D Full Mortise Heavy Weight Five Knuckle Hinge, Non-Removable Pin, Satin Stainless Steel Finish

The McKinney T4A3386 is a full mortise, heavy weight five knuckle hinge built for high-traffic and high-frequency openings where durability matters most. Measuring 4-1/2 inches by 4 inches, it features an antifriction concealed bearing design that supports heavier doors while keeping operation smooth and quiet over time. The non-removable pin (NRP) adds security for outswing doors, helping deter tampering when hinge knuckles are exposed on the exterior side. Finished in Satin Stainless Steel (US32D), this hinge resists corrosion and blends cleanly with commercial door hardware. It's a reliable choice for institutional, healthcare, and commercial applications requiring dependable long-term performance.

Features

• Full mortise mounting for standard commercial door and frame preparation.
• Heavy weight construction rated for high-frequency and high-traffic openings.
• Five knuckle design with concealed antifriction bearings for smooth, quiet operation.
• Non-removable pin (NRP) improves security on outswing door installations.
• Satin Stainless Steel (US32D) finish offers strong corrosion resistance and a clean appearance.
• Dimensions of 4-1/2 by 4 inches suit a wide range of commercial door applications.

Functional Details

The non-removable pin feature prevents the hinge pin from being extracted while the door is in the closed position, which secures outswing doors where the knuckle is accessible from the exterior. The concealed bearings carry the door weight and reduce wear at the pivot points.