McKinney TA386 4-1/2 X 4-1/2-US32D Full Mortise Three Knuckle Concealed Bearing Hinge, Heavy Weight, 4 1/2" x 4 1/2" Square Corner, 630 Satin Stainless Steel Finish

The McKinney TA386 is a heavy weight full mortise butt hinge engineered for high-frequency, high-traffic openings where durability matters most. Built with a three knuckle concealed bearing design, it delivers smooth, quiet operation while supporting substantial door weight over years of service. Measuring 4-1/2" x 4-1/2" with square corners, this hinge is finished in 630 satin stainless steel (US32D) for excellent corrosion resistance and a clean, professional appearance. Its concealed bearing construction keeps friction low and wear to a minimum, making it a reliable choice for commercial entrances, institutional facilities, and other demanding environments where consistent performance is essential.

Features

• Three knuckle concealed bearing design provides smooth, quiet swing and long service life.
• Heavy weight construction supports heavy and high-frequency doors.
• 4-1/2" x 4-1/2" size with square corners for standard commercial applications.
• 630 satin stainless steel finish resists corrosion and maintains a professional look.
• Full mortise mounting for secure installation into door and frame.
• Concealed bearings reduce friction and minimize maintenance over time.