2020 Aluminum Profile Black Zinc Alloy Hinge - 21x15mm Hole Spacing for 3D Printers & CNC

Specifications

• Compatibility: Standard 2020 Series Aluminum Profiles (6mm Slot).

• Material: High-Density Zinc Alloy.

• Finish: Black Electroplated / Powder Coated.

• Hole Spacing (Horizontal): 21mm (Center to Center).

• Hole Spacing (Vertical): 15mm (Center to Center).

• Hole Diameter: Designed for M5 Countersunk or Button Head screws.

• Opening Angle: 180 Degrees.

Key Applications & Projects

• 3D Printer Enclosures: Perfect for mounting acrylic or polycarbonate doors on Voron or Creality-based enclosures.

• Laser Cutter Housings: High-strength support for flip-up safety lids.

• Server Racks: Clean, professional-looking hinges for small-scale networking cabinets.

• Sim-Racing Rigs: Use for adjustable accessory wings or tablet mounts.

Unlock New Capabilities (Project Evolution)

• Past Projects (Prerequisites): If you've been using 3D printed hinges, you've likely experienced "sagging" or cracking under UV/heat exposure.

• Feature Upgrade: This zinc alloy hinge unlocks Heavy-Duty Panel Support. You can now confidently use 5mm or 6mm thick panels without worrying about hinge failure.

• Effort/Requirements: Beginner. Fits standard M5 hardware.

Virtual Technician & Mounting

• Safety Tip: Use M5 Button Head screws for a low-profile finish that complements the hinge design.

• Mounting Step 1: Align the 21mm horizontal spacing with the T-slot center of your profile.

• Mounting Step 2: Use M5 T-nuts for a secure, vibration-resistant anchor.

• Mounting Step 3: Ensure the hinge barrel is centered on the gap between the frame and the door for a perfect swing.

Accessories

• Included: 1x Black Zinc Alloy Hinge (Hinge only).

• Required Additional: 4x M5*10mm Screws, 4x M5 T-Slot Nuts.

Frequently Asked Questions (FAQ)

1. Does it come with black screws? No, mounting hardware is sold separately.

2. Will this fit 3030 profiles? No, the 21x15mm spacing is optimized for 20mm profiles.

3. Is the black finish durable? Yes, it is electroplated to resist scratching and wear.

4. Can it support a 500mm wide door? Yes, for wider doors, we recommend using 3 hinges for distributed load.

5. What is the hole diameter? Approximately 5.2mm, perfectly sized for M5 bolts.

6. Does it squeak? No, the pivot pin is factory-seated for silent operation.

7. Is it heavy? It weighs ~38g, significantly more substantial than plastic versions.

8. Can I use it on V-Slot? Yes, it is fully compatible with 2020 V-Slot extrusions.

9. What is the thickness of the hinge wings? Approximately 3.5mm.

10. Is it sold as a pair? No, these are sold individually to allow for custom door configurations.

11. Can it be used outdoors? The zinc alloy and plating provide good resistance, but it is best for indoor/enclosure use.

12. What if my hole spacing is different? This specific SKU is for the 21x15mm pattern; check your CAD before ordering.

13. Will M4 screws work? You can use M4 with washers, but M5 provides the best structural fit.

14. Is there any play/wobble in the hinge? No, the tolerances are tight for precision builds.

15. Does it stay open at an angle? It is a free-moving hinge; it does not have a friction lock.

16. How do I clean it? A simple wipe with a microfiber cloth; avoid harsh chemicals that might dull the finish.

17. Is the hinge pin removable? No, the pin is pressed-in for permanent security.

18. What is the maximum load per hinge? Recommended for loads up to 5kg per hinge.

19. Where is it manufactured? Sourced from high-quality hardware specialists.