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Locksmith and Locksmithing Glossary

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A2
 

An increment of .0125 typically used in a small format interchangeable core (SFIC)



 
A3
 

An increment of .018 typically used in a small format interchangeable core (SFIC)



 
A4
 

An increment of .021 typically used in a small format interchangeable core (SFIC)



 
Access Control
 

Any barrier or device, either natural or man made, that limits or prohibits, free or unlimited access




 
Access Control Cylinder
 

A replacement for a mechanical cylinder which incorporates electronic access control and allows the original host lock to function without additional wiring or hardware modifications



 
Access Control Key Fob
 

Any device other than a key designed to allow a token to be used and carried on a key ring




 
Accessory Position
 

The position of an ignition switch intended to permit the use of radio or other equipment without turning on a drive train component



 
Active Case
 

The exit device case mounted on the stile of the door on which the lock is located



 
Active Leaf
 

The single door of a pair on which the active or locking hardware is mounted



 
Active Relocking Device
 

A device that places its bolts every time a safe door is closed and activation via attack prevents it from retracting its bolts



 
Active Retainer
 

1. a cylinder retaining mechanism which requires that the plug be rotated before the cylinder can be removed, 2. a plug retaining mechanism which requires that the plug be rotated before the retainer can be removed



 
Actuator
 

A device, usually connected to a cylinder, which, when activated, may cause a lock mechanism to operate




 
ADA
 

Americans with Disabilities Act



 
Adjustable Ball Hinge
 

A pivot with adjustable height for narrow stile doors



 
Adjustable Collar
 

A spring-loaded cylinder collar which can fill a range of gaps between the cylinder head and the door or escutcheon surface




 
Adjustable Mortise Cylinder
 

Any mortise cylinder whose length can be adjusted for a better fit in doors of varying thickness



 
AED
 

Anti-explosive device



 
AFTE
 

Association of Firearm and Toolmark Examiners



 
After Hours Ddepository
 

A locked receptacle for the deposit of items after regular hours



 
AHC
 

Architectural Hardware Consultant (as certified by DHI)



 
AHD
 

After hours depository



 
AHJ
 

Authority having jurisdiction



 
Alarm System
 

A system of electrical and/or electronic components which detect and report dangers, such as fire or intrusion



 
Aligning Tube
 

1. A lock component which orients and joins the latch and knob spindles of certain bored locksets,

2. In some combination locks, a tube which houses the spindle, located between the dial ring and the lock




 
Alignment Pin
 

The perpendicular projection from a master lever in a master keyed lever tumbler lock, which engages a group of combination levers and moves their gates to align with the fence




 
All-Section Key Blank
 

The key section which enters all keyways of a multiplex key system




 
ALOA
 

Associated Locksmiths of America, Inc.



 
Americans with Disabilities Act
 

A US federal law dealing with minimum standards of building accessibility, as well as other issues concerning individuals with disabilities



 
Angularly Bitted Key
 

A key which has cuts made into the blade at various degrees of rotation from the perpendicular




 
Annunciator
 

An audible and/or visual signaling device



 
ANSI
 

American National Standards Institute



 
ANSI 117.1
 

That section of the American National Standards Institute documents pertaining to handicap access



 
ANSI strike
 

Any of many strikes designed to fit door and frame preparations as specified in the applicable document in the ANSI A115 series, common usage refers to a strike with dimensions of 4 7/8" X 1 1/4"



 
Anti Slip Positioned
 

Of or pertaining to the orientation of a cam on a profile cylinder which requires rotation before it may be removed from the lock case




 
anti-friction
 

Pertaining to a feature which, upon contact with the strike, allows smoother operation of a latch bolt



 
Anti-Passback
 

Of or pertaining to an access control system feature designed prevent consecutive use of a given credential to allow entry by more than one person at a time



 
Anti-Punch Collar
 

A two part system installed on a spindle shaft and safe body to prevent the spindle shaft from being punched into the lock case




 
Anti-Rap
 

Specifically designed to preclude bypass via attack based on sharp, repetitive blows to the mechanism



 
Anti-Wrench Reinforcement Spring
 

A lock cylinder spring designed to protect the inner and outer halves of a profile cylinder from being forcibly separated as a means of brute force entry




 
Arbor
 

the threaded end of a safe door handle



 
Architectural Finish Code
 

One of a series of specification codes used to indicate the color and texture of a metal end product that can be installed. Some finish specifications also note the base metal characteristics and processes used to obtain the end product



 
Architectural Finish Code
 

One of a series of specification codes used to indicate the color and texture of a metal end product that can be installed. Some finish specifications also note the base metal characteristics and processes used to obtain the end product.



 
Architectural Hardware
 

1. Fittings applied to protect a surface of, or to facilitate use of movable members in a building such as doors, windows, or cabinets,

2. Various fixtures used in building construction




 
Armored Escutcheon
 

A usually hardened escutcheon, typically beveled, that resists physical attack



 
Armored Face Plate
 

A face plate that conceals all lock and/or cylinder mounting screws



 
Associated Change Key
 

A change key which is related directly to particular master key(s) through the use of constant cuts



 
Associated Master Key
 

A master key which has particular change keys related directly to its combination through the use of constant cuts