Butterfly Hinge
Technical specifications of butterfly hinges (male-female hinges): materials, sizes, thickness, load capacity, and applications for wooden and plastic doors.
Product Description
The butterfly hinge (also known as a male–female hinge) is a common door hinge used for wooden doors, plastic doors, and interior room doors. Its interlocking leaf design allows easy installation without the need to mortise the door frame or door leaf.
This hinge is commonly manufactured from stainless steel 304 for corrosion resistance, powder-coated steel, or brass, providing durability and long service life in residential applications.
Thanks to its special design, butterfly hinges help minimize the gap between the door frame and the door leaf, improving both aesthetics and smooth door operation.
Typical technical specifications of butterfly hinges include:
- Material: Stainless steel 304, powder-coated steel, or brass.
- Common sizes: 4 inch (~100 × 70–75 mm) or 5 inch (~125–133 mm).
- Thickness: Approximately 2–3 mm depending on the model.
- Hinge pin diameter: Typically around 8–10 mm; some versions include bearings for smoother operation.
- Opening angle: Up to 180° or 360° depending on the design.
- Load capacity: Approximately 40–80 kg per set (usually 3 hinges per door).
Butterfly hinges are widely used for interior wooden doors, engineered wood doors, composite plastic doors, bathroom doors, and other indoor door applications.
Technical Drawing
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Butterfly hinge (male–female hinge) |
| Material | Stainless steel 304 / powder-coated steel / brass |
| Common Sizes | 4 inch (~100×70–75 mm); 5 inch (~125–133 mm) |
| Thickness | Approximately 2 – 3 mm |
| Hinge Pin | Ø8 – Ø10 mm (some models include bearings) |
| Load Capacity | Approximately 40 – 80 kg per set (3 hinges) |
| Applications | Wooden doors, plastic doors, interior doors, bathroom doors |
