If you re in a situation where you cannot or do not want to use a drill to install your lock there are a couple ways of installing an interior door lock without a drill.
How to install door lock.
Next put a new latch in and replace the door knob.
If you re installing a lockset in an existing door take out the old lockset and measure the backset the distance from the door edge to the center of the lockset hole.
Deadbolt locks extend through the doorframe and into the wall.
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Installing a deadbolt lock is essential to protecting your home.
If your new deadbolt has a concealed screw for the interior door knob consult the installation instructions for your specific lock.
Alternatively you can buy a re keying kit for the lock you already have.
For added security take the time to learn how to install a deadbolt lock on every exterior door.
To change the lock on a regular door knob first use a screwdriver to remove the door knob and the old latch.