Editing Deadbolt (section)

{{refimprove|date=July 2022}}
{{Short description|Locking mechanism}}
{{Other uses|Deadbolt (disambiguation)}}
[[File:Two holes no waiting.JPG|right|thumb|Door with two locks, one in the doorknob and a separate deadbolt]]
A '''deadbolt''' or '''deadlock''' is a type of lock morticed into a wooden door where a bolt is thrown into the door frame, using a key from either side, to secure the door. <ref>{{Cite web |title=What is a Deadlock? Everything you need to know {{!}} Locksmith Direct |url=https://www.locksmith.direct/resources/what-is-a-deadlock |access-date=2023-04-20 |website=www.locksmith.direct}}</ref> It is distinct from a [[spring bolt lock]] because a deadbolt can only be opened by a key or handle. The more common spring bolt lock uses a [[spring (device)|spring]] to hold the bolt in place, allowing retraction by applying force to the bolt itself.<ref>{{Cite web|url=https://www.oldhouseonline.com/repairs-and-how-to/how-to-repair-a-doorknob/|title=How to Repair a Doorknob - Old House Journal Magazine|date=24 October 2012}}</ref> A deadbolt can therefore make a door more resistant to entry without the correct [[key (lock)|key]], as well as make the door more resistant to [[door breaching|forced entry]].{{cn|date=August 2019}} A deadbolt is often used to complement a spring-bolt lock on an entry door to a building.