Turning a doorknob retracts the end of a bolt or latch from an opening in a strike plate on the face of the door jamb allowing the door to open.
Door lock spring mechanism.
Extension springs 4 pack come in two sizes to accommodate a variety of applications.
Spring bolt a spring latch is a bolt held in place by a spring clip.
A slam latch uses a spring and is activated by the shutting or slamming of a door.
If installing on an entry door pair it with a modern deadbolt for security ideal for large interior doors it comes with matching un lacquered brass knobs trim and a pair of impressive skeleton keys.
This type of door generally locks automatically when closed.
Deadbolt a deadlatch does not have the spring loading mechanism.
This massive cast iron rim lock is faithfully reproduced from an early 19th century original used on entry doors.
A locking mechanism used with a latch bolt.
And the everbilt 5 8 in.
The slam latch derives its name from its ability to slam doors and drawers shut without damaging the latch.
The best lock for a wooden door is a lock that meets the requirement of bs3621 the type of lock fitted can be a night latch mortice deadlock or mortice sash lock.
The spring is compressed to unlock the bolt and when released it snaps into a locked position.
Spring bolt lock or night latch.
It can be locked or unlocked at any time using.
How to fix a doorknob s bolt mechanism.
Like all latches a slam latch is a mechanism to hold a door closed.
The everbilt 5 8 in.