Door Latch Mechanism | Diagram

This movement rotates the spindle , which is threaded through a hole in the latch case.

A square metal bar that connects the interior and exterior handles. When the handle is turned, the spindle rotates and activates the internal retraction mechanism. door latch mechanism diagram

The metal box that contains the springs and cams required to move the bolt. In internal doors, this is often a tubular latch . This movement rotates the spindle , which is