Deadbolt Parts
The thumb-latch (or thumbturn) is the part of your deadbolt inside your home that you
use to lock and unlock your deadbolt.
The deadbolt is the piece of the lock that secures your door shut.
The turnpiece (also known as a tailpiece) is the portion of your lock that extends
through your door from the outer key cylinder to the inside of your door. The thumb latch
connects to turn piece in order to operate your lock. Your August lock will attach to this
in place of the thumb latch.
