🔧 External / Internal Door Hinge Ball Bearing Butt Hinges Polished Stainless Steel
These premium 304 stainless steel butterfly spring butt hinges integrate the functions of ordinary hinges and door closers. Equipped with sturdy built-in springs, they automatically rebound and close doors after opening without installing extra door closers. Precision crafted with thickened stainless steel for outstanding rust-proof and corrosion-resistant performance and long service life. Perfect for screen doors, window screens, wooden doors and other doors requiring automatic closing.
⭐ Product Features of 304 Stainless Steel Butterfly Spring Hinges
- 🎯 Heavy-Duty Built-in Spring：Auto door closing function, no additional door closer needed.
- ⛓️ Thickened 304 Stainless Steel：Anti-rust, anti-corrosion, solid and durable with extended service life.
- 🛠️ Simple Installation：Direct replacement for standard hinges; no door frame renovation required.
- 💰 Cost-Effective 2-in-1 Design：Combines hinge and door closer to cut hardware cost.
- ✅ Flush Flat Fit Design：Screen doors and window screens seal tightly when closed to block mosquitoes and bugs.
- 🔇 Silent Rebound：Doors close smoothly and quietly, preventing hand pinching and frame collision.
- ⚙️ Adjustable Spring Tension：Closing speed can be adjusted according to door weight (for applicable models).
📊 Complete Product Specifications
| Material | 304 Stainless Steel (rust and corrosion resistant) |
|---|---|
| Product Name | Stainless Steel Butterfly Hinge / Spring Self-Closing Hinge |
| Surface Finish | Brushed / Polished |
| Hinge Type | Spring Loaded Self-Closing Butt Hinge |
| Available Sizes | 2 inch self-closing hinge / 3 inch self-closing hinge / 4 inch self-closing hinge |
| Opening Direction | Inward Opening / Outward Opening |
| Color Options | Silver / Black |
| Package Contents | 1 hinge + matching mounting screws |
🏡 Wide Application Scenarios
- Screen Doors: Automatic closing for balcony and kitchen screen doors
- Window Screens: Auto-reset for outward-opening window screens
- Light Wooden Doors: Self-closing for interior room doors and storage closet doors
- Courtyard Gates: Villa and garden screen doors to keep mosquitoes out
- Commercial Premises: Mosquito-proof screen doors for shops, restaurants and catering spaces
📋 Size & Type Selection Guide
| Specification | Suitable Application | Opening Mode |
|---|---|---|
| 2-inch Self-Closing Hinge | Lightweight window screens, small screen doors | One-way opening |
| 3-inch Self-Closing Hinge | Standard screen doors, light wooden doors | One-way / Two-way opening |
| 4-inch Self-Closing Hinge | Heavy-duty screen doors, interior wooden doors | One-way / Two-way opening |
| Inward Opening Type | Doors swing toward indoor space | Single spring |
| Outward Opening Type | Doors swing toward outdoor space | Single spring |
🔧 Step-by-Step Installation Instructions
Full Installation Steps
1. Confirm the hinge size matches your door leaf and door frame before installation.
2. Secure the hinge to the pre-cut slots on the door panel with matched screws.
3. Fasten the other hinge leaf to the corresponding position on the door frame.
4. Ensure all hinges installed on one door share the same vertical pivot line.
5. Test automatic closing smoothness after installation; adjust position slightly if needed.
⚠️ Important Precautions
Safety & Usage Reminders
1. Verify the hinge size fits the door body before installation.
2. Adjust spring tension based on door weight to avoid overly tight or loose closing.
3. 304 stainless steel delivers excellent rust resistance, but regular inspection is still required for long-term humid environments.
4. Do not use beyond the weight load limit of the door.
5. Choose dual-spring hinges if bidirectional (inward & outward) opening is needed.
📦 Packing List
1 × 304 Stainless Steel Butterfly Spring Hinge (custom size and color selected by you)
Supporting stainless steel mounting screws included
💎 Why Choose Our 304 Stainless Steel Spring Butt Hinges?
Our ball bearing spring butterfly hinges adopt solid 304 stainless steel with brushed or polished surface finishes, bringing long-lasting anti-rust performance for indoor and outdoor use. The built-in adjustable spring realizes automatic door closure without extra door closers, saving hardware cost and renovation trouble. Multiple sizes, opening directions and colors are available to match screen doors, wooden doors, courtyard gates and commercial anti-mosquito doors. The flat flush installation achieves tight sealing, while silent closing protects doors and frames from impact. Single-spring one-way and dual-spring two-way options cover all daily opening demands. Easy direct replacement enables DIY installation for most door projects, making these hinges ideal household and commercial door hardware.
On 31-Jul-2026 at 11:30:48 BST, seller added the following information: