Door Hardware and Locks: Knobs, Levers, Latches and Deadbolts

Hardware is small, but it decides whether a door works well. Here is how the parts fit together.

Knobs, Levers and Sets

Passage sets just latch, privacy sets lock from inside, and keyed entry sets lock from outside. Levers are easier to use than knobs and are popular for accessibility.

Match the backset and bore size to your door when replacing hardware.

Deadbolts and Strike Plates

A deadbolt gives real security when it is paired with a solid door and long strike screws set into the framing. A strike plate that is misaligned makes a latch stick or a bolt drag.

Long screws in the strike and hinges make a big difference.

Hinges and Alignment

Most sticking doors trace back to hinges: loose screws, a worn hinge or a frame that moved. Tightening or shimming a hinge can fix the problem in minutes.

If the door still rubs, a little planing and sealing the edge usually finishes the job.