McKinney T4A3386-4-1/2x4-1/2-SS-US10B Full Mortise Heavy Weight Five Knuckle Hinge, Security Stud, Oil Rubbed Bronze Finish

The McKinney T4A3386 is a full mortise, heavy weight five knuckle hinge built for high-frequency and high-abuse door openings where dependable performance matters. Measuring 4-1/2" x 4-1/2", it features a concealed security stud for added protection on outswing doors, helping secure the door even if the hinge pin is removed. Finished in Oil Rubbed Bronze (US10B), it combines durability with a refined appearance suited to commercial and institutional settings. Its heavy weight design and antifriction bearings support demanding traffic while maintaining smooth, quiet operation over years of continuous use, making it a reliable choice for entry, corridor, and security-focused door applications.

Features

• Full mortise design for standard commercial door and frame preparation.
• Heavy weight construction handles high-frequency and high-traffic openings.
• Five knuckle configuration provides balanced load distribution and stability.
• Integrated security stud enhances protection on outswing doors.
• Antifriction bearings deliver smooth, quiet swing over time.
• Oil Rubbed Bronze (US10B) finish offers a durable, attractive appearance.

Functional Details

The security stud is a projection on one hinge leaf that interlocks with a corresponding hole on the opposite leaf when the door is closed. This engagement keeps the door secured to the frame even if the hinge pin is tampered with or removed, making it ideal for outswing exterior and security doors.

• Security stud provides added security on outswing door applications.
• Recommended for openings requiring resistance to hinge pin removal.