McKinney T4A3796 Five-Knuckle Heavy Weight Half Surface Hinge — 5 Inch
The McKinney T4A3796 is a five-knuckle heavy weight half surface hinge engineered for demanding door applications where a combination of mortised and surface-mounted installation is required. One leaf is mortised into the door edge for a flush, integrated fit, while the opposite leaf is surface-applied directly to the frame face — eliminating the need for a fully mortised frame preparation without sacrificing the strength and stability of a heavy weight hinge. At 5 inches, the T4A3796 provides the extended bearing surface and robust pivot geometry suited to heavy or wide door assemblies. Also referenced as a half surface hinge or semi-mortise hinge, this McKinney hinge is the correct replacement or new-construction choice when the door is prepped for a mortised leaf but the frame is not.
Institutional Grade Features & Benefits
- Five-Knuckle Construction: The five-knuckle barrel design distributes load across a greater surface area than standard three-knuckle hinges, reducing wear on the pin and knuckles under high-cycle or heavy-door conditions.
- Heavy Weight Rating: Built to support substantial door weight, this heavy duty hinge is appropriate where standard-weight hinges are insufficient — typical of institutional, commercial, and high-traffic door openings.
- Half Surface Configuration: One leaf mortises flush into the door edge while the opposite leaf sits surface-mounted on the frame face, providing installation flexibility when full mortise frame prep is unavailable or impractical.
- 5-Inch Hinge Height: The 5-inch height delivers an extended bearing surface for improved load distribution, commonly specified for oversized, heavy, or wide commercial doors.
- McKinney Quality: McKinney is a recognized commercial hardware manufacturer with a long history of producing hinges to exacting tolerances for architectural and institutional door applications.
- Replacement & New Construction Ready: The T4A3796 is suitable for direct replacement of existing half surface hinges or for specification in new commercial door and frame assemblies requiring this hinge type.
Technical Specifications
- Brand: McKinney
- Part Number: T4A3796
- Part Type: Hinge — Half Surface (Semi-Mortise)
- Hinge Type: Five-Knuckle Heavy Weight Half Surface Hinge
- Hinge Height: 5 Inch
- Mounting: Door leaf mortised into door edge; frame leaf surface-applied to frame face
Technical Details
| Feature | Details |
|---|---|
| Brand | McKinney |
| Model / Part Number | T4A3796 |
| Part Type | Hinge |
| Hinge Style | Half Surface (Semi-Mortise) |
| Knuckle Count | Five-Knuckle |
| Weight Class | Heavy Weight |
| Hinge Height | 5 Inch |
| Door Leaf Mounting | Mortised into door edge |
| Frame Leaf Mounting | Surface-applied to frame face |
| Brand | McKinney |
| General - US Finishes | US26D - Satin Chrome |
| Hinge Type | Half Surface |
| Hinge Mounting | Half Surface |
| Door Handing | Field Reversible |
| Hinge Height | 5.0" Hi |
| Hinge Grade/Thickness | Heavy Wt .180 to .190 |
| Hinge Corners | Square |
| Hinge Knuckle | 5 Knuckles |
| Base Material | Steel |
| Part Type | Hinge, Hinge |
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