Hinge Plate 2 x 4 with Articulated Joint (3640 / 3639)

Unlock engineering creativity with the LEGO® Hinge Plate 2 x 4 with Articulated Joint. This two-part assembly (3640 + 3639) gives builders the flexibility to create foldable, swiveling, or adjustable elements within their MOCs or set rebuilds. Perfect for functional doors, wings, ramps, and more!

Product Features:

• Includes both hinge components: Top Plate (3640) and Bottom Plate (3639)
• Assembled to form a rotating 2 x 4 hinge connection
• Fully compatible with standard LEGO® bricks and plates

Suggested Build Ideas:

• Starship Boarding Ramps: Create fold-down ramps for spacecraft or heavy transport builds
• Modular Furniture: Design adjustable chairs, tables, or ladders
• Secret Passages: Build hinged wall panels that swing open to reveal hidden treasures

Did You Know?

This classic hinge combination has been around since the 1980s and was a favorite in early LEGO® space and castle sets for its ability to introduce motion before ball joints became mainstream.

Explore the full LEGO® hinge parts collection for more creative motion solutions.

LEGO® parts are intended for ages 4 and up. They may pose a choking hazard for children under 3 years old.