ALOA ICPL flashcards
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32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Shear line
- The boundary between the plug and the cylinder body where the top of the bottom pin and bottom of the driver pin meet when the correct key is inserted.
- Backset
- The horizontal distance from the edge of the door to the center of the lock cylinder or latch face, commonly 2-3/8 or 2-3/4 inches.
- Handing
- The orientation of a lock (left or right) determined by the direction the door swings and the side the lock is mounted on.
- Deadbolt throw
- The distance the deadbolt extends from the door edge into the strike, typically 1 inch for residential and commercial locks.
- ANSI/BHMA grade
- A durability and security rating for locks and hardware, with Grade 1 being the highest and Grade 3 the lowest.
- Pin tumbler cylinder
- A lock mechanism using spring-loaded pins that must be raised to the shear line by a key's bitting to allow the plug to rotate.
- Strike plate
- A metal plate on the door frame that receives the latch or deadbolt, providing a secure opening for the bolt.
- Cylinder plug
- The rotating part of a pin tumbler cylinder that contains the keyway and is turned by the correct key.
- Pinning kit
- A set of pins, springs, and tools used to rekey or service pin tumbler cylinders, organized by size and length.
- Master keying
- A keying system where a master key operates multiple cylinders while change keys operate only individual cylinders.
- Audit trail
- A record of events such as user access, time, and method, used in electronic locks for security and accountability.
- Solenoid
- An electromechanical actuator used in electronic locks to move a locking mechanism when energized.
- Graphite lubricant
- A dry lubricant used in pin tumbler locks to reduce friction without attracting dirt, unlike oil-based lubricants.
- Relocker
- A device in a safe that activates during an attack to prevent the bolt work from retracting, often using glass or spring-loaded pins.
- Wheel pack
- The set of rotating wheels in a combination lock that must align at the gate for the fence to drop and allow opening.
- TL-15 rating
- A safe rating indicating resistance to tool attack for 15 minutes, tested under laboratory conditions.
- Dual control
- A security procedure requiring two authorized individuals to open a container, such as a safe deposit box with bank and customer keys.
- Fire rating
- A rating indicating the time a safe maintains an internal temperature below a specified limit, such as 350°F for 1 hour.
- Time delay
- A feature on safes or vaults that prevents opening until a preset time has elapsed, reducing robbery risk.
- Transponder key
- An automotive key containing a chip that communicates with the vehicle's immobilizer to allow engine start.
- RKE frequency
- The radio frequency used by remote keyless entry systems, commonly 315 MHz or 433 MHz depending on region.
- Slim jim
- A thin metal tool used to manipulate the locking mechanism of a vehicle door through the window seal.
- Immobilizer
- An electronic security system in vehicles that prevents engine start without a properly coded key or fob.
- Valet key
- A key that operates the doors and ignition but not the trunk or glove box, limiting access for parking attendants.
- Laser-cut key
- An automotive key with cuts made on the side or face using a laser cutting machine, often for high-security applications.
- Key bitting
- The pattern of cuts on a key blade that corresponds to the pin lengths in a lock cylinder.
- Change key
- A key that operates only one cylinder in a master key system, as opposed to a master key that operates multiple.
- Key control
- Procedures and systems to restrict unauthorized key duplication, such as patented keyways and signature cards.
- Grand master key
- A key that operates all cylinders in a master key system, including those operated by master and change keys.
- Cross-keying
- A situation where one key operates multiple cylinders that are not intended to be operated by that key.
- Proof of ownership
- Documentation such as a registration or ID that verifies a customer's authority to request locksmith services.
- Written estimate
- A document provided before work begins that details the scope of work and expected charges, requiring customer approval.