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

The McKinney T4A3386 is a full mortise, heavy weight five knuckle hinge built for high-frequency and high-abuse door openings where durability matters most. Measuring 4-1/2" by 4-1/2", this hinge features concealed ball bearings that support the weight of heavy or oversized doors while promoting smooth, quiet operation over years of use. The non-removable pin (NRP) construction adds an important layer of security, preventing pin removal when the door is closed—making it a smart choice for exterior and outswing doors. Designed to meet demanding commercial standards, this McKinney hinge delivers dependable performance across institutional, retail, and public building applications.

Features

• Full mortise design for standard hinge preparation on frame and door.
• Heavy weight construction handles high-frequency and heavy-door applications.
• Five knuckle configuration provides balanced load distribution and long service life.
• Concealed ball bearings ensure smooth, quiet, and consistent swing.
• Non-removable pin (NRP) enhances security on outswing and exterior doors.
• Sized at 4-1/2" x 4-1/2" to fit common commercial door openings.

Functional Details

The non-removable pin feature secures the hinge pin in place so it cannot be extracted while the door is closed, protecting against tampering on outswing doors where the barrel is exposed on the exterior side.

• Non-removable pin (NRP) recommended for use on out-swinging doors.
• Concealed ball bearings for heavy weight applications.