A kind of lock in which the bolt (moving portion) is held in position by the cylinder rather than by a spring and so can not be retracted except by turning the cylinder
A bolt that extends into the door jam, is not susceptible to unauthorized retraction by end pressure, and is usually activated by a key or turn knob
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
A bolt which is not activated by a spring When locked the bolt cannot be returned by end pressure
Type of lock bolt which must be operated by key to lock and unlock from the outside From the inside of the door, the lock can sometimes be operated by a thumb turn Because there is no spring action on the dead bolt, the lock cannot be comprimised by credit cards or other tools, as with the spring or dead latch
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
Locking mechanism for an entrance door or other door, in which a bolt moves with a turn of a key into a jamb Deadbolts can be a single cylinder or double cylinder With a single cylinder deadbolt, a key is used on one side, and is turned by hand on the other side 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 emergency
A lock bolt, usually rectangular, that has no spring action, and that becomes locked against end pressure when fully projected
A kind of lock in which the bolt (moving portion) is held in position by th cylinder rather than by a spring and so can not be retracted except by turning the cylinder