McKinney RCTA2714 4-1/2 x 4 Five-Knuckle Standard Weight Round Corner Full Mortise Butt Hinge
The McKinney RCTA2714 is a full mortise, five-knuckle, standard weight ball bearing butt hinge featuring 1/4-inch round corners and a leaf size of 4-1/2 inches by 4 inches. Designed for door openings requiring a clean, recessed installation, this hinge is mortised flush into both the door edge and the door frame, producing a tight, professional fit that minimizes gap and maximizes door alignment stability. The five-knuckle barrel configuration distributes load across additional bearing surfaces compared to three-knuckle designs, supporting smooth, consistent door swing over extended service life.
Institutional Grade Features & Benefits
- Five-Knuckle Barrel Design: Distributes pivot load across five interlocking knuckles for enhanced structural integrity and reduced wear at the barrel compared to standard three-knuckle hinges.
- Ball Bearing Operation: Precision ball bearings housed within the barrel reduce friction and enable consistently smooth door swing, making the RCTA2714 well suited to doors in frequent-use environments.
- Standard Weight Construction: At 0.134-inch steel leaf thickness, the hinge delivers a proven balance of material strength and weight appropriate for standard commercial door applications.
- 1/4-Inch Round Corners: The subtle radius corner profile (versus square or 5/8-inch radius) integrates cleanly with compatible door and frame mortise preparations, maintaining a refined appearance at the hinge location.
- Full Mortise Installation: Both leaves recess fully into the door edge and frame rabbet, keeping the hinge barrel at the door face plane and providing a traditional, architecturally finished look.
- McKinney Quality Manufacturing: Produced by McKinney, a longstanding name in commercial door hardware, the RCTA2714 meets the dimensional expectations of professional door installers, finish carpenters, and hardware distributors.
Technical Details
| Feature | Details |
|---|---|
| Brand | McKinney |
| Part Number | RCTA2714 |
| Part Type | Full Mortise Butt Hinge |
| Hinge Size | 4-1/2 in. x 4 in. |
| Knuckle Count | Five-Knuckle |
| Bearing Type | Ball Bearing |
| Weight Class | Standard Weight |
| Leaf Thickness (Gauge) | 0.134 in. |
| Corner Radius | 1/4 in. Round Corner |
| Installation Type | Full Mortise |
Documentation
| Brand | McKinney |
| General - US Finishes | US26D - Satin Chrome |
| Hinge Type | Full Mortise |
| Hinge Mounting | Full Mortise |
| Door Handing | Field Reversible |
| Hinge Height | 4.5" Hi |
| Hinge Width | 4.0" Wi |
| Hinge Grade/Thickness | Standard Wt .119 to .146 |
| Hinge Corners | 1/4" Radius |
| Hinge Knuckle | 5 Knuckles |
| Base Material | Steel |
| Part Type | Hinge |
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