McKinney TA786-4-1/2x4 Full Mortise Heavy Weight Concealed Bearing Hinge, Three Knuckle, 4-1/2" x 4", Square Corner

The McKinney TA786-4-1/2x4 is a full mortise, heavy weight hinge built for high-frequency and high-traffic openings where durability matters most. Featuring a three knuckle design with concealed bearings, it delivers smooth, quiet operation while handling heavy doors with ease. Measuring 4-1/2" x 4" with square corners, this hinge is engineered to standard commercial template dimensions for reliable installation on new or replacement projects. As part of McKinney's trusted TA-series, it offers the strength and long service life expected in institutional, healthcare, and commercial environments. Its concealed bearing construction keeps moving parts protected, reducing wear and maintaining consistent performance over years of use.

Features

• Full mortise mounting for standard commercial door and frame preparation.

• Heavy weight construction suited to high-frequency, high-traffic doors.

• Three knuckle design with concealed bearings for smooth, quiet swing.

• 4-1/2" x 4" size with square corners for standard template compatibility.

• Non-removable pin options available for added security on out-swinging doors.

Functional Details

The concealed bearing design positions the bearings within the knuckles, protecting them from dirt and wear while supporting heavy door weights. This configuration allows the hinge to carry substantial loads across frequent daily cycles without binding or sagging.

• Concealed bearing, heavy weight hinge.

• Recommended for high frequency and/or heavy weight doors.

• Three knuckle, full mortise construction.