The secondary and positive locking device used in connection with a standard lockset to give added protection to trailer doors. Most door assemblies are pre-tooled to accommodate a deadbolt lock assembly.
n. a bolt, which requires a deliberate action to extend, and which resists end pressure in the unlocking direction when fully extended
A bolt which is not activated by a spring. When locked the bolt cannot be returned by end pressure.
the part of a lock that is engaged or withdrawn with a key
a locking device that, once fully extended, cannot be retracted except by operating the locking device (usually a key cylinder or thumb-turn knob)
an important tool in keeping doors secure
a special kind of locking mechanism
A bolt operated manually and not actuated by springs. When locked, the bolt cannot be forced back. It's dead untill unlocked. A deadbolt is operated (projected and retracted) by a key cylinder or lever handle. Deadlatch: A latch in which the latchbolt is positively held in the projected position by an auxiliary mechanism. The latch now acts as a bolt.
A lock bolt which is operated by a key and/or a turnpiece.
A bolt that when locked resists direct pressure applied to it in the unlocking direction.
A lockable bolt which can not be pushed back once in the locked position.
A bolt which is put into the locked and unlocked position by the key only. The exception to this is a fire escape lock which can be unlocked from the inside, usually using a handle.
Locking mechanism most commonly used for entrance doors. Single cylinder deadbolts feature exterior keyways and interior thumb turns, while double cylinder deadbolts feature two keyways.
Locking mechanism for an entrance door or other door. Deadbolts can be a single cylinder or double cylinder. With a single cylinder deadbolt, a key is used on the outside and is turned by hand on the inside. With a double cylinder deadbolt, a key is used on both sides. Double cylinders are only recommended where no one needs to go through a door in case of an emergency.
A lock in which the latchbolt is engaged by using a key or a thumbturn.
A lock bolt having no spring action or bevel, and which is operated by a key or a turn piece.
Locking mechanism. Metal bolt which slides from door into frame preventing the door from opening. Security feature for exterior doors.
A much stronger form of a door lock or bolt than normal that usually extends deeper into the door frame and is typically not manipulated with a handle, but rather with a lock and/or latch. Deadbolts are generally used for security purposes on external doors.
A lock bolt having no spring acton nor bevel, and which is operated by a key or a turn piece.
A latch used to secure a door closed, the latch being driven from the door into a receiver in the jamb or frame.
