The cross bore is the main hole drilled into the face of the door where the body of the lock chassis is installed.
The name of the lock part inside the door.
Cylinder lock body the cylinder or lock body is the part of the door lock where you insert the key.
When the lock body turns the latch or deadbolt moves to either allow or stop the door from being opened.
Inside the lock cylinder the housing containing both the key entry assembly and the deadbolt knob are pins springs a cam and the tang.
The outside of the knob includes the keyhole and this is also related to the lock.
A locking doorknob features a locking mechanism on the interior handle and a slot for a key on the exterior.
When it s locked the cylinder engages a series of spring loaded pins which keep the cylinder from turning.
Connected to and controlled by the lock body the latch or deadbolt is the part of the door lock that holds the door in place when it s locked.
On non locking doorknobs the interior and exterior handles are smooth and contain no locking mechanism.
Technically only the inside of a knob is directly related to the locking mechanism.
Doorknobs have two handles one on each side of the door and are either locking or non locking.
When you insert a key the uneven edge pushes the pins upward to fit the key s height in that location within the lock body.