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McKinney T4A3386 NRP Heavy Weight Hinge | 4-1/2" x 4-1/2" Non-Ferrous
The McKinney T4A3386 NRP is a premier, industrial-grade architectural hinge designed for high-security and high-traffic commercial applications. Built as a heavy weight, non-ferrous 5-knuckle hinge, it features a robust .180 gauge thickness to support the physical demands of extra-heavy wood or metal doors. This hinge is a top-tier solution for door restoration, offering unmatched durability in environments like hospitals, schools, and government buildings where performance is non-negotiable.
Advanced Security with NRP (Non-Removable Pin)
The NRP (Non-Removable Pin) feature is a critical security innovation. It utilizes a hidden set screw within the hinge barrel that is inaccessible when the door is closed. This provides:
- Enhanced Security: Prevents unauthorized removal of the door by ensuring the pin cannot be tapped out from the outside.
- Outward Swinging Door Protection: Vital for exterior doors where hinge pins are exposed to the public side, acting as a powerful solution for commercial door security.
- Tamper Resistance: Designed to withstand manipulation, offering long-term peace of mind without compromising the door’s clean, professional appearance.
Key Performance Features
- Non-Ferrous Base Material: Available in Stainless Steel (ANSI A5111) or Brass (ANSI A2111). These materials provide a permanent solution for door edge reinforcement, resisting rust and corrosion in coastal or high-moisture areas.
- Oil-Impregnated Bearings (TA Prefix): Features self-lubricating, non-ferrous bearings that ensure smooth, silent operation and a longer wear life by resisting clogging and hinge failure.
- Fire Rating Specification: Please note that only the US32D Satin Stainless Steel finish is UL-listed and approved for use on fire-rated door assemblies (up to 3 hours). Brass-based materials are not approved for fire-rated openings.
- Industrial Strength: The heavy-duty classification ensures the hinge can handle high-frequency opening and closing cycles without losing structural integrity.
Technical Details & Specifications
- Brand: McKinney (ASSA ABLOY)
- Model Number: T4A3386 NRP
- Dimensions: 4-1/2" x 4-1/2" (Heavy Weight .180 Thickness)
- Pin Type: Non-Rising Stainless Steel Pin with Button Tips and Non-Removable Set Screw.
- Standard Fasteners: Furnished with All Wood Screws (1-1/4" x 12) and All Machine Screws (1/2" x 12-24).
Why Choose the McKinney T4A3386 NRP?
The McKinney T4A3386 NRP is the definitive choice for high-security retrofits and new construction. Whether you are providing a solution for door surface repair or securing an exterior perimeter, the combination of a heavy-weight non-ferrous body and a tamper-proof pin ensures your opening remains safe and functional for decades. It delivers a permanent and cost-effective solution for door security that meets the most rigorous architectural standards.
| General - US Finishes | US26D - Satin Chrome or US32D - Satin Stainless Steel/ 630 or US10 - Satin Bronze or US10B - Oil Rubbed Bronze |
| Brand | McKinney |
| Hinge Height | 4.5" Hi |
| Hinge Width | 4.5" Wi |
| Hinge Grade/Thickness | Heavy Wt .180 to .190 |
| Hinge Type | Full Mortise |
| Hinge Options | Ball Bearing, NRP (Non Removable Pin) |
| Base Material | Stainless Steel, Brass |
| Hinge Corners | Square |
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