What is a door latch?

A door latch is a mechanical device used to secure a door and prevent it from opening unintentionally. It typically consists of a metal bolt or bar that slides into a strike plate mounted on the door frame. The latch is operated by turning a knob or lever on the door, which moves the bolt in and out of the strike plate to lock or unlock the door.

There are various types of door latches, including cylindrical latches, mortise latches, and tubular latches, each with their own unique design and functionality. Some door latches also have built-in security features such as key locks or electronic keypads for added protection.

Door latches are essential for providing security and privacy in homes, offices, and other buildings. They are commonly used on interior and exterior doors, as well as on cabinets, drawers, and other types of furniture. Regular maintenance and lubrication of door latches are important to ensure smooth operation and prevent malfunctions.