A hinge is a mechanical device that connects two solid objects, allowing rotation between them. Hinges may be made of flexible material or of moving components. In biology, many joints function as hinges.

There are many types of door hinge. Four main types include:

• Butt/Mortise Hinges, usually in threes or fours, which are inset (mortised) into the door and frame. Most residential hinges in the U.S. are made of steel, although mortise hinges for outswing doors are often made of brass or stainless steel base to prevent corrosion.
• Continuous Hinges, which run the entire length of the door (also known as a "Piano Hinge")
• Pivot Hinges which pivot in openings in the floor and the top of the door frame. Also referred to as a double-acting floor hinge.
• Concealed Hinges used for furniture doors (with or without self closing feature, with or without dampening systems) they are made of 2 parts, 1 part is the hinge cup and the arm, the other part is the mounting plate.

Other types include:

• Butterfly or Parliament (UK) Hinge
• Counterflap Hinge
• Flush Hinge
• Coach Hinge
• Rising Butt Hinge
• Double action spring hinge
• Tee Hinge
• Friction Hinge
• Security Hinge
• Cranked or 'Stormproof' Hinge
• Lift-off Hinges

See also

• Door safety

External links

• Hardware Source Hinge Information including a Hinge Glossary
• Illustrated glossary]

Hardware (mechanical) | door furniture

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