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What are butt hinges?

Published in Hardware 2 mins read

Butt hinges are a common type of hinge that provide a limited angle of rotation between two objects.

How Butt Hinges Work

Butt hinges function like most other hinges, by connecting two objects and allowing them to pivot. Here's a breakdown of their key components and how they operate:

  • Leaves: Butt hinges consist of two flat metal pieces called leaves. One leaf is attached to a fixed object (like a door frame), and the other leaf is attached to the moving object (like a door).
  • Knuckle: The leaves are connected by a central section known as the knuckle. This knuckle is made up of interlocking cylindrical parts.
  • Pin: A pin runs through the knuckle, allowing the two leaves to pivot smoothly.

Key Features of Butt Hinges

  • Limited Rotation: Butt hinges are designed to offer a limited range of motion, typically around 270 degrees.
  • Simple Design: They have a basic construction, making them cost-effective and easy to install.
  • Wide Variety: They come in various sizes, materials, and finishes to suit different applications.

Common Applications

Butt hinges are commonly used in a wide range of applications, including:

  • Doors (both interior and exterior)
  • Cabinet doors
  • Boxes
  • Furniture
  • Trunks

Example Scenario

Imagine you are installing a new door. You would attach one leaf of a butt hinge to the door frame, and the other leaf to the door itself. The knuckle and pin allow the door to swing open and closed smoothly.

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