McKinney T4A3786 Heavy Weight Hinge | 4-1/2" x 4-1/2" Ball Bearing Steel

The McKinney T4A3786 is an industrial-strength heavy weight bearing hinge engineered specifically for the most demanding high-traffic openings in commercial construction. With a robust .180 gauge thickness, this 5-knuckle, full mortise hinge is a premier solution for door restoration on extra-heavy wood or metal doors. Its specialized Oil Impregnated Bearings provide a maintenance-free, self-lubricating operation that excels in schools, hospitals, and high-frequency public facilities.

Advanced Oil Impregnated Bearings (TA Prefix)

The TA Prefix signifies McKinney’s high-performance oil impregnated bearing system. These one-piece, non-ferrous, and self-lubricating bearings ensure:

• Superior Longevity: Drastically reduces wear and friction for a smoother, longer-lasting door swing under heavy loads.
• Environmental Resistance: Engineered to resist clogging and corrosion, preventing common hinge failures in high-abuse environments.
  
• Maintenance-Free Life: Acts as a permanent solution for door edge reinforcement without the need for manual greasing or oiling.

Key Performance & Safety Features

• Heavy-Duty .180 Gauge Steel: Significantly thicker than standard hinges to support the weight of oversized doors and high-abuse entryways.
  
• UL Fire Rated: Rigorously tested and UL listed (3-hour) for use on fire-rated door assemblies, ensuring full compliance with life-safety codes and NFPA 80.
  
• ANSI/BHMA A156.1 Compliant: Corresponds to industry-standard ANSI A8111, adhering to the highest benchmarks for structural durability.
  
• Non-Rising Steel Pin: Features a secure pin with professional button tips to maintain a clean architectural aesthetic and prevent the pin from working upward over time.

Technical Details & Specifications

• Brand: McKinney (ASSA ABLOY)
• Model: T4A3786
• Dimensions: 4-1/2" Height x 4-1/2" Width (Heavy Weight .180 Thickness)
• Material: Plated Steel (Available in various architectural finishes)
• Fasteners Included: Furnished with all Wood Screws (1-1/4" x 12 FPHW) and all Machine Screws (1/2" x 12-24 FPHM).
  
• Installation: Constructed with a template screw hole pattern for precision alignment and rapid field replacement in standard commercial frames.
  

Why Choose the McKinney T4A3786?

The McKinney T4A3786 is the definitive choice for facilities requiring a "no-fail" hardware solution. Whether you are performing a solution for door surface repair or outfitting a new commercial perimeter, its combination of heavy-weight steel and self-lubricating bearings ensures your openings remain safe and functional for decades. It is a high-intent, professional solution for door security where reliability is non-negotiable.

BABAA Compliant -- meets the Build America Buy America Act domestic-content preference for federal-funded infrastructure projects; compliance documentation available.