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

The McKinney T4A3786 is an industrial-grade heavy weight bearing hinge engineered for the most demanding high-traffic environments. Featuring 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 public buildings, schools, and hospitals where reliability is non-negotiable.

Specialized Oil Impregnated Bearings (TA Prefix)

Unlike standard bearings, the TA Series features a one-piece, non-ferrous, and self-lubricating bearing system. This innovation provides:

• Superior Durability: Ensures longer-lasting wear and significantly reduces the risk of hinge failure.
  
• Environmental Resistance: Engineered to resist clogging, corrosion, and friction-related drag, even in high-frequency use.
  
• Smooth Performance: Provides a consistent, silent swing, acting as a permanent solution for door edge reinforcement.

Key Performance & Safety Features

• Heavy-Duty .180 Gauge Steel: Thicker than standard commercial hinges to support the weight of heavy-duty fire doors and high-abuse openings.
  
• UL Fire Rated: Rigorously tested and certified to meet UL standards (3-hour) for use on fire-rated door assemblies.
  
• ANSI/BHMA A156.1 Compliant: Corresponds to industry-standard ANSI A8111, ensuring top-tier structural integrity and functional excellence.
  
• Template Pattern: Designed with a template screw hole pattern for precision alignment and rapid field replacement on new or existing frames.
  

Technical Details & Specifications

• Brand: McKinney (ASSA ABLOY)
  
• Model: T4A3786
  
• Dimensions: 4-1/2" Height x 4" Width (Heavy Weight .180 Gauge)
  
• Base Material: High-strength plated steel
• Fasteners Included: Furnished with all Wood Screws (1-1/4" x 12 FPHW) and all Machine Screws (1/2" x 12-24 FPHM).
  
• Pin Type: Features a non-rising steel pin with professional button tips to maintain a clean aesthetic and prevent pin migration.
  

Why Choose the McKinney T4A3786?

The McKinney T4A3786 is the definitive solution for door surface repair and security in high-occupancy facilities. By combining a heavy-weight steel build with self-lubricating bearings, this hinge minimizes maintenance costs while maximizing door life. It is a high-intent, professional solution for door security that ensures your facility’s openings remain functional and compliant under the heaviest traffic loads.

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