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  Glossary of Terms
   
 

ALOA Terms Copyright 1985 by the Master Keying Study Group of the ALOA Sponsored National Task Group for Certified
Training Programs. Revised 1991. Copyright 1991 by the Lock Industry Standards and Training (LIST) Council. All rights
Reserved. DORMA terms and definitions included.

   
       
 
     
 

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Glossary of Terms

1800- DORMA term
n. Model Number for DORMA's magnetically operated Fire Life Safety closer/holder that will swing up to 180 degrees.

1800SD- DORMA term
n. Model Number for DORMA's magnetically operated Fire Life Safety closer/holder with a built in smoke detector that will swing up to 180 degrees.

A-
ADA
Abb. Americans with Disabilities Act
n. a US federal law dealing with minimum standards of building accessibility, as well as other issues concerning individuals with disabilities

ANSI
abb. American National Standards Institute

ANSI 117.1
n. that section of the American National Standards Institute documents pertaining to Handicap access

AO 8 Arm- DORMA term
n. Model Number for DORMA's specialty, adjustable arm that gives installers more flexibility with unique applications and retrofit work.

architectural hardware
n. 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

arm (of a closer)
n. door closer linkage which connects the closer to the frame or door, depending on the mounting style

armored face plate
n. a face plate that conceals all lock and/or cylinder mounting screws

astragal
n. a molding attached to the active leaf of a pair of doors and overlapping the inactive leaf

authority having jurisdiction
n. in any particular situation, installation, or location, the person or office which has the responsibility and authority to select, interpret and enforce the applicable building, life safety, disability or fire codes

automatic closing
adj. pertaining to a door which is equipped with a door closer, or other device to close it without manual intervention. Frequently found in Life Safety and fire code requirements

auxiliary lock
n. any lock installed in addition to the primary lockset

B-
B label
n. a classification by Underwriters Laboratories for doors with 1 1/2 hour rated fire protection

back plate
n. a thin piece of metal, usually with a concave portion, used with machine screws to fasten certain types of cylinders to a door

backcheck
n. the resistance provided by a door closer as a door is opened

backset
n. the distance between the center of a cross-bore and the bolt edge of a door or drawer

barrier free
n. having to do with the absence of restrictions to access by the handicapped

Basic Building Code
n. former name for BOCA National Building Code. BBC
abb. Basic Building Code

bevel (of a door)
n. the pitch on the leading edge of a door which allows clearance for closing

bevel (of a lock)
n. the pitch of the face designed to match the bevel of a door. Some locks have an adjustable bevel.

bezel
n. a threaded collar commonly used to secure certain cylinder or lock assemblies

BHMA
abb. Builders Hardware Manufacturers Association

bible
n. that portion of the cylinder shell which normally houses the pin chambers, especially those of a key-in-knob cylinder or certain rim cylinders

bi-fold door
n. a door with two or more sets of hinges, the additional set(s) allows the door to have an accordion action when opened

biometric
adj. of or pertaining to a lock with a hybrid mechanism, part of the mechanism identifies a physical attribute such as finger print, voice print, etc. while another part is a mechanical mechanism

bit
1. n. the part of the key which serves as the blade, usually for use in a warded or lever tumbler lock, 2. v. to cut a key

bitting
n. 1. the number(s) which represent(s) the dimensions of the key, 2. the actual cut(s) or combination of a key

blank
adj. uncut, see also "key blank"

BOCA
abb. Building Officials and Code Administration International

BOCA National Building Code
abb. Building Officials and Code Administration International (formerly Basic Building Code)

bolt
n. any movable projection which blocks the movement of one object relative to another

bolt cup
n. a thimble shaped device in a safe door frame that a locking bolt extends into when the door is closed and the bolt(s) are extended bolt head
n. the part of a bolt that enters a strike

bored lock
n. a lock for a door prepared with one or more cross-bores and one or more edge-bores

boring jig
n. a tool, temporarily affixed to a door, which provides a template structure to guide drill bits properly when preparing for the installation of specific hardware

bottom pin
n. usually a cylindrical shaped tumbler which may be conical, ball shaped or chisel pointed on the end which makes contact with the key

bow
n. the portion of the key which serves as a grip or handle

bow stop
n. a type of stop located near the key bow

bow to tip
n. a specification that a bitting combination is recorded starting at the bow and proceeding to the tip

BTS 75V- DORMA term
n. Model Number for DORMA's Cam and Roller concealed floor mounted door closer. 'B' for "Boden" (ground) 'TS' is 'Tuerschliesser', 'V' is for "verstellbar" (adjustable); ; German words for ground door closer that is adjustable. This floor closer is adjustable 1-4.

BTS 80- DORMA term
n. Model Number for DORMA's Cam and Roller concealed floor mounted door closer. 'B' for "Boden" (ground), 'TS' is 'Tuerschliesser'; German words for ground mounted door closer. This is a sized floor closer available 2-6.

BTS 80EMB- DORMA term
n. Model Number for DORMA's Cam and Roller fire life safety concealed floor mounted door closer with a built in electrified hold-open . 'B' for "Boden" (ground), 'TS' is 'Tuerschliesser', 'EMB', Elektromagnetische Feststellung im Boden (Electro-magnetically operated hold-open in the ground); German words for ground mounted door closer opem, with a built in electrified hold-open. This is a sized floor closer available 2-6.

building master key
n. a master key which operates all or most master keyed looks in a given building

bump key
n. a cut key, cut to allow the user to replicate the action of a pick gun

burglar alarm
n. a system designed to detect and report conditions which may indicate intrusion or attempted intrusion

burglar resistant
adj. of or pertaining to a security container designed to resist forcible entry for a specified period of time determined by the rating of the container

button knob
n. the knob in a key-in-knob lock that includes a push or turn button

by-passing sliding door
n. Two doors mounted on tracks parallel to each other that when one or both are slid to opposite extremes block the opening. Typically, one may be moved behind the other to allow access.

Cc
label
n. a classification by Underwriters Laboratories for doors with 3/4 hour rated fire protection

cam
n. 1. a lock or cylinder component which transfers the rotational motion of a key or cylinder plug to the bolt works of a lock, 2. the bolt of a cam lock

cam lock
n. a complete locking assembly in the form of a cylinder whose cam is the actual locking bolt

capping block
n. a holding fixture for certain interchangeable cores which aids in the installation of the,caps

card access system
n. an access control system that utilizes a controlled security card as the credential

card holder
n. a person to whom a card has been issued

card reader
n. a device which interprets coding resident on or in cards

case
n. the housing or body of a lock

case cover
n. the portion of a lock case which is designed to be removable to allow access to the mechanism

CCW
abb. Counter Clockwise, as used in combination dialing instructions

central station
n. a location designed for the express purpose of processing status signals for multiple alarm systems

certificate of occupancy
n. a document, granted by the authority having jurisdiction, permitting occupancy or use

chain bolt
n. a spring biased bolt operated by an attached chain, typically for mounting to the top of a door

chain lock
n. a device used to secure property with interlocking links and secured on both ends by a slide plate or a key locking device

change key
n. 1. a key which operates only one cylinder or one group of keyed alike cylinders in a keying system, 2. any device that is used to mechanically or electronically allow resetting of certain key or combination locks, see also "reset key" #1

chassis
n. the part of a cylindrical lockset that contains the actuating mechanism and has a means for mounting trim and a bolt

circular strike
n. a typically round, finished strike, usually driven into place in a drilled hole

CJIL
abb. the title "Certified Journeyman Institutional Locksmith" as awarded by ILA

CJL
abb. the title Certified Journeyman Locksmith as awarded by the Professional Locksmith Association of Alberta

CJS
abb. the title "Certified Journeyman Safecracker" as awarded by NSO

CK
abb. 1. change key, 2. control key

clear opening
n. a portal providing clearance through which passage is unhampered

closed knob
n. a knob without an opening in its face

closed loop
n. a detection circuit where discontinuity in a branch will result in a reportable condition

closer size
adj. a numerical value related to the applied force of a door closer, with a larger number being a stronger force. Older closers were assigned alphabetic size designations, where A was the smallest.

clutch
n. 1. the part of a profile cylinder which transfers rotational motion from the inside or outside element to a common cam or actuator, 2. the feature of a lever handle lockset which allows free movement of the lever when locked, 3. the feature of a cylinder which allows turning the plug without operation of the lock when a certain pressure is applied without the correct key

CMIL
abb. the title "Certified Master Institutional Locksmith" as awarded by ILA

CMK
abb. construction master key

CMK'd
abb. construction master keyed

CML
abb. the title "Certified Master Locksmith" as awarded by ALOA

CMS
abb. the title "Certified Master Safecracker" as awarded by NSO

CMST
abb. the title "Certified Master Safe Technician" as awarded by SAVTA

CO
abb. certificate of occupancy

code
n. 1. a designation assigned to a particular key combination for reference when additional keys or cylinders may be needed. See also, "blind code", "direct code", and "key symbol", 2. a standard for Life Safety, structural integrity, fire safety, etc., either incorporated into the statutes of a given jurisdiction, or a model standard

comb attack
n. 1. a pin tumbler defeat tactic using a series of straight pins or teeth on a single tool, intended to push the pin stack past the shear line, 2. a defeat tactic used to force a spring cover off a pin tumbler cylinder

combinate
v. to set a combination in a lock, cylinder, or key

combination
n. the group of numbers which represent the bitting of a key and/or the tumblers of a lock or cylinder

concealed closers
n. door closers that are concealed in the door, frame, or floor.

construction core
n. an interchangeable or removable core designed for use during the construction phase of a building. The cores are normally keyed alike and, upon completion of construction, they are to be replaced by the permanent system's cores.

construction master key
n. a key normally used by construction personnel for a temporary period during building construction. It may be rendered permanently inoperative without disassembling the cylinder.

construction master keyed
adj. of or pertaining to a cylinder which is or is to be operated temporarily by a construction master key

contact switch
n. a electrical, magnetic or mechanical device that triggers a circuit(s) to open or closed depending on the application

continuous duty
adj. designed to sustain application of power for extended periods

control key
n. 1. a key whose only purpose is to remove and/or install an interchangeable or removable core, 2. a bypass key used to operate and/or reset some combination type locks, 3. a key which allows disassembly of some removable cylinder locks

controller
n. a device that has decision making capability by way of authentication or lookup in a database. It serves a control function by having output relays or other interfaces with other devices which may include other controllers, electric strikes, alarms, or printers

coordinator
n. in conjunction with a pair of doors, a device designed to cause the inactive leaf to close first

coordinator/closer systems
n. combination closer and coordinator device designed to cause the inactive leaf to close first provided by DORMA

core
n. a complete unit, often with a "figure eight" shape, which usually consists of the plug, shell, tumblers, springs, plug retainer and spring cover(s). It is primarily used in removable and interchangeable core cylinders and looks.

corner bracket
n. a door closer mounting plate attached to the upper corner of the jamb

CPL
abb. the title "Certified Professional Locksmith" as awarded by ALOA

CPP
abb. "Certified Protection Professional" as awarded by ASIS

CPS
abb. the title "Certified Professional Safe Technician" as awarded by SAVTA

CRL
abb. the title "Certified Registered Locksmith" as awarded by ALOA

credential
n. any identifying or authorizing instrument, other than a mechanical key, that can cause entry to be allowed

cross keying
n. the deliberate process of combinating a cylinder (usually in a master key system) to two or more different keys which would not normally be expected to operate it together. See also "controlled cross keying" and "uncontrolled cross keying."

CSI
abb. Construction Specifiers Institute

curved lip strike
n. a strike so shaped as to effect smoother function of the latch while the door is closing

cutaway
1. adj. of or pertaining to a device with material removed or a transparent cover to expose and demonstrate a mechanism or feature, 2. n. any cutaway product

cut edge
n. the portion of the key blade which contains the cuts

cut key
n. a key which has been bitted or combinated

cut root
n. the bottom of a key cut

cut root shape
n. the shape of the bottom of a key cut. It may have a flat or radius of a specific dimension, or be a perfect "V"

cutter
n. the part of a key machine which makes the cuts into the key blank

CW
abb. Clockwise, as used in combination dialing instructions

cylinder
n. a complete operating unit which usually consists of the plug shell, tumblers, springs, plug retainer, a cam/tailpiece or other actuating device, and all other necessary operating parts

cylinder key
n. a broad generic term including virtually all keys for pin and disc tumbler locks

cylinder lock
n. any lock that is operated by a cylinder key

cylindrical lockset
n. a bored lockset whose latch or bolt locking mechanism is contained in the portion installed through the cross-bore

D-
deadbolt
n. a bolt, which requires a deliberate action to extend, and which resists end pressure in the unlocking direction when fully extended deadlock
n. a lock which incorporates a deadbolt deadlocking
adj. pertaining to any feature which, when fully engaged, resists attempts to move the latch or bolt in the unlocking direction through direct pressure deadlocking latch
n. a latchbolt with a deadlocking mechanism

delayed egress
n. an exit that will not open until a preset amount of time after actuation has elapsed

DHI
abb. Door and Hardware Institute

direction of rotation
n. the direction a combination lock dial is to be turned when the combination is worked. It usually is specified as clockwise (CW) or right (R), or counter clockwise (CCW) or left (L).

dog
1. v. to place an exit device in the holdback mode, 2. n. in marine applications the latch for a hatch

dogging cylinder
n. a key operated cylinder used to dog an exit device

dogging device
n. in an exit device, a mechanism used to temporarily disable the latch from locking

dogging key
n. a key or tool used to dog an exit device

dogging screw
n. a screw used to dog an exit device

door bumper
n. an obstruction installed to prevent a door or lock from contacting another object

door closer
n. a device designed to regulate the closing of a door automatically by various means

door control
n. any device which controls the opening, closing or position of a door

door holder
n. any device designed to maintain a door in the open position

door swing
adj. the direction and degree to which a door opens, as LH 90º, RH 180º, etc.

double-acting closer
n. a door closer designed to be used on a double-acting door

double-acting door
adj. a door that may be pushed open from either side

double-acting hinge.
n. a hinge which permits movement of a door in either direction from the closed position

double cylinder
adj. pertaining to a lock with two keyed cylinders

double cylinder deadlock
n. a deadbolt lock whose bolt may be operated by a key from either side

double locking
adj. of or pertaining to a lock with one or more bolts with different functions, typically a latch and a deadbolt

double throw bolt
n. a deadbolt that has two distinct extended positions, both of which are deadlocked

dummy
adj. pertaining to any type of non-active device applied for aesthetic purposes

dummy cylinder
n. a non-functional facsimile of a rim or mortise cylinder used for appearance only, usually to conceal a cylinder hole

dummy trim
n. non-active trim applied for aesthetic purposes

duplicate
v. to copy, see also "duplicate key"

duplicate key
n. any key reproduced from a pattern key

dust cover
n. a device designed to prevent foreign matter from entering a mechanism through the keyway

dust proof cylinder
n. a cylinder designed to prevent foreign matter from entering either end of the keyway

dust proof strike
n. a typically floor mounted strike that has a spring loaded internal plunger designed to keep the receptacle free of dust and debris

E-
EAC
abb. electronic access control

edge-bore
n. a hole drilled into the edge of a door where a bored or interconnected lockset is to be installed

edge pull
n. a handle mounted on, or in, the edge of a sliding or pocket door for gripping to pull the door closed

educational occupancy
n. those buildings or areas which are designated as places for education purposes according to life safety or building codes

ejector hole
n. a hole found on the bottom of certain interchangeable cores under each pin chamber. It provides a path for the ejector pin.

ejector pin
n. a tool used to drive all the elements of a pin chamber out of certain interchangeable cores

electric strike
n. an electro-mechanical strike, which secures or releases the latch via applied current

electrified lockset
n. a lock which is controlled electrically

electronic access control
n. access control that uses electricity

emergency code
n. in an electronic lock, a factory-set or user-set code or combination that will open the lock a predetermined number of times

emergency key
n. the key which operates a privacy function lockset

emergency master key
n. a special master key which usually operates all guestroom locks in a hotel master key system at all times, even in the shut out mode. This key may also act as a shut out key.

EMF-DORMA term
n. Model Number for DORMA's Fire Life Safety Closer Holder. 'EMF', Elektromagnetische Feststellung, Rauchmelder (Electro-magnetically operated hold-open); German words

EMR-DORMA term
n. Model Number for DORMA's Fire Life Safety Closer Holder with a built in smoke detector. 'EMR', Elektromagnetische Feststellung, Rauchmelder (Electro-magnetically operated hold-open, smoke detector); German words

EMK
abb. emergency master key

end cap
n. the cover typically used on the hinge side edge of many touch bar exit devices

entry/exit delay
n. an alarm or access control feature which allows a specific time lapse between the activation of a switch and the activation of a secondary component

ERD
abb. external relocking device

escutcheon
n. a surface mounted trim which enhances the appearance and/or security of a lock installation

exit alarm
n. an annunciator that signals the opening of an exit door

exit device
n. a door lock/latch mechanism which releases in the direction of exit travel via a bar or panel extending across the major width of the door

exit door
n. 1. a door which has no provision for ingress, 2. a door which fills some or all the code requirement for safe egress of the occupant load from a building or portion of a building

exit only
adj. refers to hardware designed to secure an opening in such a way as to permit exit at all times but prevent entry at all times

exit travel, direction of
n. the way occupants are expected to move to get out of a building or a portion of a building

extended lip strike
n. a strike with a (usually curved) leading edge that protrudes to or beyond the edge of the jamb

extractor key
n. a tool which normally removes a portion of a two-piece key or blocking device from a keyway

F-
face
n. the finished component of a lock visible on the edge of a door

face cap
n. a finished cover, that may retain a dust cover or serve as a plug retainer, affixed to the face of some lock cylinders

face plate
n. the finished, removable plate which covers the front of some locks

factory original key
n. the out key furnished by the lock manufacturer for a lock or cylinder

fail-safe
adj.: a feature of a security device designed to release, for safety purposes, during a power loss

filler plate
n. a usually flat piece of material used to; cover a hole or opening, provide a foundation for mounting additional hardware, or adjust the position of hardware as mounted

finish
n. a material, coloring and/or texturing specification

fire alarm
n. a system designed to detect and report conditions, which may indicate presence of a fire

fire door
n. a door constructed to provide a specific degree of fire protection

fire door assembly
n. any combination of a fire door, frame, hardware and other accessories, that together provides a specific degree of fire protection to the opening

fire exit hardware
n. exit devices, which may legally be installed, on fire doors. Distinguished from other exit devices because it: 1. is labeled for both fire and panic and; 2. has no means of locking the latch in a retracted position

fire life safety
n. products that save lives during fires and smoke emergencies

fire separation
n. construction designed to limit the spread of fire in a structure

fireman's key
n. a key used to override normal operation of elevators, bringing them to the ground floor

flat goods
n. ancillary architectural hardware such as push plates, mop plates, stretcher plates, kick plates, etc.

floor closer
n. a door closer installed below the door at the floor surface, generally also acting as a bottom pivot for the door

flush bolt
n. a non-keyed deadbolt, with a one piece escutcheon/faceplate, typically mounted flush to door surfaces

flush pull
n. a recess in a door or drawer which serves as a handle or grip

flush ring
n. a ring, recessed into a door, which swings out to serve as a handle

forced entry
n. entry or bypass techniques which leave obvious damage to the lock or enclosure

French doors
n. a set of double doors composed of many small glass panes and narrow stiles

full lip strike
n. a strike plate for a latch with the lip extending the full height of the strike

full mortise
adj. pertaining to a method of installation in which only the faceplate and trim is exposed. The lock case is installed in a pocket in the door or drawer v. to make a rectangular pocket in a door or drawer that is only open on the edge of the door or drawer

full mortise hinge
n. a type of hinge designed for mortising into the edge of the door and into the rabbet of a door frame

function
n. a set of operating features for a particular type of lock or exit device which make it suitable for a specific application. The function is designated by a classification name or standards reference number. See ANSI or BHMA for a specific listing.

fusible link
n. a relock trigger activated by heat

fusible link arm
n. a door closer arm which includes a mechanism for holding a door open. This mechanism has an element which, when subjected to certain temperatures, melts and\ allows the door to close

G-
galling
v. a transfer of material from one surface to another as a result of friction

geographical exclusivity
n. a feature, offered by some manufacturers, of distributing keyways and/or combinations for locks to ensure uniqueness in a geographic location

GGGMK
abb. great great grand master key

GGGMK'D
abb. great great grand master keyed

GGM
abb. great grand master key

GGMK
abb. great grand master key

GGMK'D
abb. great grand master keyed

GM
abb. grand master key

GMK
abb. grand master key

GMK section
abb. grand master key section

GMK'D
abb. grand master keyed

grand master key
n. the key which operates two or more separate groups of locks, which are each operated by a different master key

grand master key system
n. a master key system which has exactly three levels of keying

grand master keyed
adj. of or pertaining to a lock or cylinder which is or is to be keyed into a grand master key system

gravity pivot hinge
n. a hinge with complimentary sloped or V shaped knuckles on each leaf that cause gravity to turn the door back to the closed position

great grand master key
n. the key which operates two or more separate groups of locks which are each operated by a different grand master key

great grand master key system
n. a master key system which has exactly four levels of keying

great grand master keyed
adj. of or pertaining to a lock or cylinder which is or is to be keyed into a great grand master key system

great great grand master key
n. the key which operates two or more separate groups of locks which are each operated by different great grand master keys

great great grand master key system
n. a master key system which has five or more levels of keying

great great grand master keyed
adj. of or pertaining to a lock or cylinder which is or is to be keyed into a great great grand master key system

grip
n. the knob, lever, thumbpiece, push-pull operator, etc. of any working trim

GSA
abb. General Services Administration (US Government)

GSR-DORMA term
n. Model Number for DORMA's combination closer and coordinator. 'GSR', Gleitschienen Schliessfolgeregler (slide channel type door coordinator); German words

guest key
n. a key in a hotel master key system which is normally used to unlock only the one guest room for which it was intended, but will not operate the lock in the shut out mode

H-
half mortise
1. adj. pertaining to an installation prep that typically leaves the bolt face plate and a perpendicular surface of the lock visible, with visible surfaces being flush mounted, 2. v. to make a cavity in a door or drawer that is open on the edge and on one side of the door or drawer, 3. adj. pertaining to a locking device designed to fit in a half mortise prep

half-mortise hinge
n. a hinge which has one leaf mortised into the door and the second leaf applied to the surface of the frame

half-surface hinge
n. a hinge which has one leaf mounted onto a face of the door and the second leaf mortised into the frame

handed
adj. pertaining to hardware which is manufactured only for application on doors with a specific orientation

handicapped code
n. any building code designed to ease access for handicapped persons

hard wire system
n. a system which uses metallic conductors to connect the various sensors to the central processor

hardware key
n. a computer hardware component which protects copyrights by preventing software from running on any computer where the key is not installed. The key is typically accessed via one of the ports.

hardware schedule
n. a listing of the door hardware used on a particular job it includes the types of hardware, manufacturers, locations, finishes, and sizes. It should include a keying schedule specifying how each locking device is to be keyed.

header
n. the horizontal, top, member of a door jamb

High Energy Powered Operator
n. Complies ANSI/BHMA A156.10, has 1.5 seconds to backcheck, No more than 40 lbs. of force to stop door movement. Requires guard rails, safety mats, canceling scanners

high security cylinder
n. a cylinder which offers a greater degree of resistance to any two or more of the following: picking, impressioning, key duplication, drilling or other forms of forcible entry

high security key
n. a key for a high security cylinder

high use/high abuse
v. products durable enough to withstand extreme conditions

hinge side mount
n. Also referred to Regular Mount . The door closer mounts on the hinge side of the door with the arms attached perpendicular to the frame.

hinge stile
n. the vertical edge of a door where hinges are installed

hold open
n. 1. a function of self latching hardware which allows a lock to be set in a non-latching mode 2. A function of a door closer, or separate hardware device, which allows the door to be retained in an open position

hold open arm
n. a door closer arm with the capability of maintaining the door in the open position

hollow core door
n. a non-metal door with structural reinforcement creating air pockets between the two faces

hollow metal door
n. typically a door made of sheet metal on all surfaces and lightly reinforced to make it rigid

hospital hinge
n. a hinge with a large chamfer at each end of the knuckle

hotel cylinder
n. a cylinder which can function to prevent the operation of all keys except emergency, display and some shut out keys. It may also contain an indicator.

housekeeper's key
n. a selective master key in a hotel master key system which may operate all guest and linen rooms and other housekeeping areas

housing
n. that part of a locking device which is designed to hold a core

hub
n. 1. a lock component, which redirects rotational motion from a spindle or shaft to linear movement of a latch or bolt, 2. (key change), the part of a combination wheel that the change key engages to permit the combination to be changed

I-
IC
abb. interchangeable core

ICBO
abb. International Conference of Building Officials

ILA
abb. Institutional Locksmiths Association

ILCP
abb. "Institutional Locksmith Certification Program"; a locksmith certification program administered by ILA

inactive case
n. the exit device case mounted on the stile opposite the lock stile

inactive door
n. the door of a pair, which is secondary in usage and is normally locked by surface or flush bolts

indicator
n. a device which provides visual evidence that a deadbolt is extended or that a lock is in the shut out mode

integral lockset
n. a lockset that combines two or more different mounting or operational methods, typically key-in-knob and mortise

interchangeable core
n. a key removable core which can be used in all or most of the core manufacturer's product line. No tools (other than the control key) are required for removal of the core.

interconnected lockset
n. a lockset whose trim provides a means of simultaneous retraction of two or more bolts which may also be operated independently

interlocking bolt
n. a bolt which interlocks with its strike when fully engaged

ITS
Intertek Testing Services-Third party testing service

ITS 96- DORMA term
n. Model Number for DORMA's Cam and Roller concealed in the door mounted door closer. 'I' for "Integriert" (Integrated, Concealed), 'TS' is 'Tuerschliesser'; German words for integrated, concealed in the door closer. This concealed in the door closer is adjustable 1-4.

J-
jamb
n. the vertical components of a door frame

jimmy proof
adj. pertaining to a lock having a bolt which interlocks with its strike

K-
k
sym. symbol for "keys" used after a numerical designation of the quantity of the keys requested to be supplied with the cylinders; e.g., lk, 2k, 3k, etc. it is usually found in hardware/keying schedules.

KA
abb. keyed alike

KD
abb. keyed different

keeper
n. the movable portion of an electric strike which captures the bolt, see also "strike"

key
n. a properly combinated device which is, or most closely resembles, the device specifically intended by the lock manufacturer to operate the corresponding lock

key blank
n. any material manufactured to the proper size and configuration which allows its entry into the keyway of a specific locking device. A key blank has not yet been combinated or cut.

key control
n. 1. any method or procedure which limits unauthorized acquisition of a key and/or controls distribution of authorized keys, 2. a systematic organization of keys and key records

key cut(s)
n. the portion of the key blade which remains after being cut and which aligns the tumbler(s)

key extractor
n. a tool designed for use to remove a broken or stuck key from a lock

key holder
n. a person to whom a key has been issued

key-in-knob cylinder
n. a cylinder used in a key-in-knob lockset

key-in-knob lockset
n. any lockset with a key operated cylinder in one or more knobs

key-in-lever lockset
n. any lockset with a key operated cylinder in one or more lever handles

key lock
adj. pertaining to a device operated by a mechanical key, as opposed to combination, electronics, etc.

key machine
n. any machine designed to cut keys

Key Records Department
n. the department which is responsible for generating and issuing all lock and key combinations and maintaining records of them

key switch
n. a switch operated by a keyed lock mechanism, which may be an integral part of the switch assembly

keyed
adj. 1. combinated, 2. having provision for operation by key, 3. of or pertaining to a function of a lock or exit device which requires a key with a specific combination

keyed alike
adj. of or pertaining to two or more looks or cylinders which have or are to have the same combination. They may or may not be part of a keying system

keyed different
adj. of or pertaining to a group of locks or cylinders, each of which is or is to be combinated differently from the others. They may or may not be part of a keying system.

keying
n. any specification for how a cylinder or group of cylinders are or are to be combinated in order to control access

keying conference
n. a meeting of the and user and the keying system supplier at which the keying and levels of keying, including future expansion, are determined and specified

keyway
n. 1. the opening in a lock or cylinder which is shaped to accept key bit or blade of a proper configuration, 2. the exact cross sectional configuration of a keyway as viewed from the front. It is not necessarily the same as the key section.

kick plate
n. a protective plate mounted on the bottom of a door to prevent damage to minimize damage to the door

KIK
abb. Key-in-Knob

KIL
abb. Key-in-Lever

knuckle
n. the part of a hinge that is formed to accept a hinge pin and act as a pivot surface for another knuckle

KWY
abb. Keyway

L-
L-handle
n. an L-shaped handle assembly which may be lockable

L-handle lock
n. a cabinet lock with an L-shaped handle

labeled door
n. a door which has a fire protection certification by one of the recognized underwriting agencies

labeled exit
n. a labeled door equipped with labeled hardware that can be used for building egress

large format interchangeable core
n. an interchangeable core which is too large to fit into a small format interchangeable corehousing

latch
1. n. a mechanical or magnetic door fastener which can automatically keep a door, gate, etc., closed, 2. v. engagement of a latch when a door, gate, etc. is pushed or pulled closed

latch bolt
n. a spring actuated bolt, normally with one or more beveled surfaces, which, when aligned with the strike, engages it automatically

latch guard
n. a plate or combination of interlocking pieces designed to block access to the edge of a latch when the door is shut

latch tube
n. the encasement portion of some types of lockset that contains the latch and may also contain its operating mechanism

latching speed (of a door closer)
n. the final speed of a door just prior to closing

latchset
n. a non-locking device which contains only a latch bolt, a means of operating said latch and all required trim

leaf
n. 1.One half or section of a hinge 2. One door in a set of double doors 3. One section of a multiple section door

LEED
LEED Green Building Rating System, a voluntary, consensus-based national standard for developing high-performance, sustainable buildings.

left hand (man door)
adj. pertaining to an inward swinging door with hinges on the left side, using the outside of the door as reference

left hand reverse bevel (door)
adj. pertaining to a left handed door which swings outward

lever handle
n. a turn device in the general shape of an "L" used on certain locks and latches, as an alternate to a knob for ease of use. Primarily accepted for ADA.

LFIC
abb. Large Format Interchangeable Core

LH
abb. left hand

LHR
abb. left hand reverse bevel

linkage
n. 1. any of various parts in a lock that help transfer motion to the bolt of a lock from a cylinder, turnpiece or other actuator not mounted to or touching the bolt/lock case, 2. part of the interconnected boltworks of an automotive lock

lip (of a strike)
n. the extended (usually curved) leading edge of a strike

lite
n. a hole in a door or wall to admit light, usually with glass or another transparent or translucent pane

local alarm
n. an alarm that is annunciated in the immediate vicinity of the activating device

lock
n. any device which prevents access or use by requiring special knowledge or equipment

lock-in
adj. of or pertaining to a combination lock that is inoperable because the last number of a combination is set in the forbidden zone

lock stile
n. the vertical edge of a door designed for lock or latch installation

lockout
n. any situation in which the normal operation of a lock or cylinder is prevented

lockset
n. a locking device, complete with trim, mounting hardware and strike

locksmith
n. a person with the knowledge and ability to select, install, service and bypass all the components of an electrical or mechanical lock

lost ball keying
n. a keying method that uses a tiny ball(s) in the pin stack. The ball(s) may be removed from the pin stack without disassembly of the cylinder. Typically used for construction keying.

Low Energy Powered Operator
n. Complies with ANSI/BHMA A156.19, has 3 seconds to backcheck, 4 seconds to fully open, no more than 15 lbs. of force to stop door movement.
Does not require guard rails, safety mats, canceling scanners

M-
magnetic contact
n. an electrical switch activated by magnetic attraction or repulsion

magnetic latch
n. a latch which uses magnetic force to stay engaged with its strike

magnetic stripe
n. a thin layer of material consisting of oriented ferromagnetic oxide particles held together by a resin binder and bonded to a non-magnetic surface such as paper or plastic

manipulation resistant
n. a combination lock with features that prevent determining the combination without physical attack within a specific time limit

manual dogging
n. 1. an exit device that requires a physical action to dog it, v. 2. using a wrench or a special key to dog an exit device

magnetic dogging
n. 1. an fire exit device that requires a physical action to dog it, and is held dogged by an electric magnet v. 2. using an electric interruption will release the latch bolt on this device\ so it will then latch the door.

master key
n. 1. a key which operates all the master keyed locks or cylinders in a group, each lock or cylinder usually operated by its own change key, 2. v. to combinate a group of locks or cylinders such that each is operated by its own change key as well as by a master key for the entire group, 3. n. an automotive key which operates all or most locks on a vehicle where there is also a valet key employed

master keyed
adj. 1. of or pertaining to a cylinder or group of cylinders which are or are to be combinated so that all may be operated by their own change key(s) and by additional key(s) known as master key(s), 2. a warded lock whose warding has been designed to allow different hierarchies of keys to operate

medium stile
adj. pertaining to an aluminum or hollow metal door with a stile generally between 3-1/4 and 4-1/4 inches wide

MK
abb. master key

MK'd
abb. master keyed

MK'd only
abb. master keyed only

MK section
abb. master key section

monitored door
n. a door equiped with a device that reports, or reports and records, the operational status of the door, lock or other hardware

mortise
1. v. to prepare by removing stock material from the edge of a door, drawer, frame or opening to create a recess which allows the flush fit or insetting of relevant lock or other hardware, 2. n. the cavity prepared by mortising, 3. adj. of or pertaining to a locking device designed to fit in a mortise preparation

mortise cylinder
n. a threaded cylinder typically used in mortise locks of American manufacture

mortise exit device
n. an exit device designed for mortise installation

mortise lockset
n. a lockset the case of which is designed to fit in a mortise in the edge of a door or drawer

mullion
n. a vertical center post in the frame of a pair of doors

multi-color finish
adj. of or pertaining to a lockset whose finish is different for different trim components on one side of a door

multi-point lock
n. a lock which has more than one bolt which are thrown and withdrawn simultaneously, often in more than one direction

N-
Narrow stile
adj. pertaining to aluminum doors with stiles generally between 1-3/4 and 2-3/4 inches wide

national service provider
n. a nationwide maintenance contracting company who supplies the sub-contracted services of a local technician to a customer

NCK
sym. symbol for "no change key," primarily used in hardware schedules

neck (of a key)
n. 1. the portion of a bit key between the shoulder and the bit(s), 2. the portion of a cylinder key between the shoulder and the bow

NFPA 80
n. National Fire Protection Association standards for doors and windows

NFPA 101
n. National Fire Protection Association life safety code

NFS
abb. non-fail safe

nickel silver
n. a brass alloy containing nickel used in making some key blanks and tumblers

night latch
n. a rim mounted auxiliary latch bolt

NKR
abb. non key retaining

NLSA
abb. National Locksmith Suppliers Association

NMK
abb. a notation used to indicate "not master keyed" and is suffixed in parentheses to a regular keying symbol. It indicates that the cylinder is not to be operated by the master key(s) specified in the regular keying symbol; e.g., AB6(NMK).

non-fail safe
adj. a feature of a security device designed to remain engaged, for security purposes, during a power loss

non-handed
adj. pertaining to hardware that is manufactured in a way, which allows installation on doors of any orientation without requiring modification or adjustment to accommodate the door orientation

non-reversible
n. door hardware whose hand cannot be changed in the field

non-sized closer
n. a door closer with infinitely adjustable closing force between specific sizes

NRK
abb. non-removable key

NRP
abb. non-removable pin

O-
O. b.
abb. operated by, as used in keying schedules

occupancy type
adj. the use to which an area of a building is put with reference to the prevailing life safety or building code

offset cam
n. a cam which is bent to have its ends in different planes

one-way deadbolt
n. a deadbolt operable from only one side of a door

open back strike
n. a strike, typically used on double door applications, that has an unenclosed opening opposite the lip edge

out of time
adj. of or pertaining to a condition where a mechanical part is misoriented and cannot function correctly

overhead concealed closer
n. a closer designed for installation out of view in the door header area

overhead stop
n. a door stop which contacts the door and attaches at the top of the door and frame.

P-
panic button
n. any switching device in an alarm system designed to be activated by a person in a panic situation. It creates an immediate alarm condition

parallel arm
n. a type of door closer and/or closer mounting which leaves the arm generally parallel to the door face when closed

patch fittings
n. fittings that allow all glass panels to be attached to a headframe without a top and bottom rail. DORMA provides concealed closer control overhead and in the floor attached with these fittings.

patented unrestricted keyway
n. a specific keyway which is sold without restriction by a lock maker, but which retains patent protection against non-original key blank makers

photo-electric detection device
n. a detection device actuated by abrupt changes in light

pick
n. 1. a tool or instrument, other than the specifically designed key, made for the purpose of manipulating tumblers in a lock or cylinder into the locked or unlocked position through the keyway, without obvious damage, 2. v. to manipulate tumblers in a keyed lock mechanism through the keyway, without obvious damage, by means other than the specifically designed key

pick gun
n. a machine designed to impact all of the bottom pins of a pin tumbler lock at exactly the same time and thereby bounce the top pins beyond the shear line

pick key
n. a type of manipulation key, cut or modified to operate a lock or cylinder

pin
v. to install pin tumblers into a cylinder and/or cylinder plug, see also "pin tumbler"

PIN
abb. personal identification number

pin kit
n. a type of keying kit for a pin tumbler mechanism

pivot
n. a hinge with a fixed pin and knuckle, forming a single joint

pocket door
n. a door which opens by sliding into a hollow wall

pocket strike
n. an electric strike which does not require a face cut in the door jam, yet allows operation of the boltwork of the door lock, often by manipulating the locking and deadlatching portions via end pressure

positive latching
n. the condition of a door being secured such that manual operation of the latch or bolt mechanism must occur before it may be opened

power locks
n. electrically or electro-pneumatically operated locks

power pack
n. a battery with a special configuration designed for use in a specific product

pre-assembled lockset
n. a lock designed to be installed into a cutout in the edge of a door. The lock body and most or all of its trim need no further assembly other than securing it to the door.

prep
n. 1. the location and dimensions of the cut out(s) and reinforcing in a door or frame required to accept a piece of hardware, 2. v. to prepare a door or frame for installation of a lock or other hardware

proprietary
adj. of or pertaining to a keyway and key section assigned exclusively to one end user by the lock manufacturer. It may also be protected by law from duplication.

protected key
n. a physical key that affords legal remedies against duplication

PRP
abb. "Proficiency Registration Program"; a locksmith certification program administered by ALOA

public way
n. any parcel of land essentially open to the outside air and permanently appropriated to the public for public use and having a clear width and height of not less than 10 ft.

pull handle
n. trim for gripping to apply pulling force to a door

pull plate
n. a generally flat and commonly rectangular trim with an attached handle for pulling open a door

Pullman keeper
n. a type of keeper which is shaped to operate with the radiused contour of a Pullman latch

Pullman latch
n. a type of latch which pivots like a hinge and whose locking side is radius proprietary
adj. of or pertaining to a keyway and key section assigned exclusively to one end user by the lock manufacturer. It may also be protected by law from duplication.

protected key
n. a physical key that affords legal remedies against duplication

PRP
abb. "Proficiency Registration Program"; a locksmith certification program administered by ALOA

public way
n. any parcel of land essentially open to the outside air and permanently appropriated to the public for public use and having a clear width and height of not less than 10 ft.

pull handle
n. trim for gripping to apply pulling force to a door

pull plate
n. a generally flat and commonly rectangular trim with an attached handle for pulling open a door

Pullman keeper
n. a type of keeper which is shaped to operate with the radiused contour of a Pullman latch

latch
n. a type of latch which pivots like a hinge and whose locking side is radiused

push plate
n. a generally flat and commonly rectangular trim mounted for hand contact to push open a door

R-
Rabbeted door
n. a door having and edge contoured with an offset creating two surfaces which form an overlap at the abutting edge

rabbeted lock
n. a lock with a face or front which is specially formed to use in a rabbeted door

rail
n. the horizontal construction member located on the top and bottom of a door

rake (rake & hang)
n. a picking technique that attempts to use quick withdrawal of the pick to set the tumblers

rated
adj. of or pertaining to a product's compliance with one or more recognized standards such as UL.

recombinate
v. to change the combination of a lock, cylinder or key

recore
v. to rekey by installing a different core

register number
n. 1. a reference number, typically assigned by the lock manufacturer to an entire master key system, 2. a blind code assigned by some lock manufacturers to higher level keys in a master key system

rekey
v. to change the existing combination of a cylinder or lock

remote release
n. a mechanism for permitting the unlocking of any lock device at a distance from the device

removable core
n. a key removable core which can only be installed in one type of cylinder housing; e.g., rim cylinder or mortise cylinder or key-in-knob lock

removable cylinder
n. a cylinder which can be removed from a locking device by a key and/or tool

repin
v. to replace pin tumblers, with or without changing the existing combination

restricted
adj. of or pertaining to a keyway and corresponding key blank whose sale and/or distribution is limited by the lock manufacturer in order to reduce unauthorized key proliferation

return
n. 1. the extension of a cam which bends back towards the mounting surface and the measurement of the remaining distance from the mounting surface to the end of the cam, 2. the distance from a door face to the tip end of a lever handle, 3 the distance from the face edge of the frame to the wall

reveal
n. the distance measured from the trim surface of the jamb to the leading face of the door on the stop side when closed reverse bevel
adj. pertaining to the bevel of a door which swings towards the outside

reverse keyway
n. a keyway shape that is a mirror image of another

reverse strike
n. a strike used for rim mounted hardware used on reverse bevel doors

reversible
adj. pertaining to hardware that is manufactured in a way, which allows field assembly or adjustment to accommodate installation on doors with different orientations

restraint
n. a device designed with a shackle that restricts the movement or actions of a person, such as handcuffs

restricted
adj. of or pertaining to a keyway and corresponding key blank whose sale and/or distribution is limited by the lock manufacturer in order to reduce unauthorized key proliferation

retainer
n. a component which is clipped, staked, or driven in place to maintain the working relationship of other components

retainer pin
n. 1. a component seated on a spring, in the end of a plug, that interacts with a retainer cap to keep it in place, 2. any non-threaded rod that maintains the relationship of two or more different parts.

lever
n. a lever handle designed to replace the knob of a lockset

return
n. 1. the extension of a cam which bends back towards the mounting surface and the measurement of the remaining distance from the mounting surface to the end of the cam, 2. the distance from a door face to the tip end of a lever handle

reveal
n. the distance measured from the trim surface of the jamb to the leading face of the door on the stop side when closed

reverse bevel
adj. pertaining to the bevel of a door which swings towards the outside

reverse keyway
n. a keyway shape that is a mirror image of another

reverse strike
n. a strike used for rim mounted hardware used on reverse bevel doors

reversible
adj. pertaining to hardware that is manufactured in a way, which allows field assembly or adjustment to accommodate installation on doors with different orientations

reversible key
n. a usually symmetrical key which may be inserted either way up to operate a lock

RH
abb. right hand

RHR
abb. right hand reverse bevel

right hand (man door)
adj. pertaining to an inward swinging door with hinges on the right side, using the outside of the door as reference

right hand reverse bevel (door)
adj. pertaining to a right handed door which swings outward

rim cylinder
n. a cylinder typically used with surface applied locks and attached with a back plate and machine screws. It has a tailpiece to actuate the lock mechanism,

rim exit device
n. an exit device mounted on the door surface with a surface mounted strike.

rim lock
n. a lock or latch typically mounted on the surface of a door or drawer

RL
abb. The title "Registered Locksmith" as awarded by ALOA

rose
n. a usually circular escutcheon

RTS 88- DORMA term
n. Model Number for DORMA's Cam and Roller overhead concealed door closer. 'R' for "Rahmen" (Transom), 'TS' is 'Tuerschliesser'; German words for transom mounted door closer. This is a sized closer available 2-4.

S-
S/ A
abb. sub-assembled

SAVTA
abb. Safe and Vault Technicians Association

SBCCI
abb. Southern Building Code Congress International

screwless knob
n. a mortise lock knob assembly secured to the spindle without screws

screwless rose
n. a mortise lock rose installed without screws

sectional trim
n. a design that uses two or more escutcheons on the same side of a door for a single lock

self closing
adj. pertaining to doors or door control which have a continuous force applied in the closing direction

set screw
n. a screw used to fasten a component in a fixed position relative to another component

seven pin master key
n. a master key for all combinations obtained by progressing seven bitting positions

sex bolt
n. a nut and bolt set used to through bolt, with a closed nut basically flush with the mounting surface creating the appearance of a carriage bolt

SFIC
abb. Small Format Interchangeable Core

SHDA
abb. Security Hardware Distributors Association (formerly NLSA)

shoe
n. 1. a bracket which attaches the arm of a door closer to the door or frame, 2. the surface mounted case and guide components of an exit device, 3. a mortise lock component which transfers pivoting motion of a thumbpiece to linear movement of the latch bolt

sidebar
n. a cylinder locking member mounted longitudinally in a plug, which engages multiple tumblers

sidebar lock
n. a lock mechanism which incorporates a sidebar

simple latch
n. a non-deadlocking latch

single acting (door)
n. a door which swings from the latched position in only one direction

six pin master key
n. a master key for all combinations obtained by progressing six bitting positions

SKC-DORMA term
Abb. Serialized Key Control-patented key control system by DORMA.

smokeproof
adj. referring to an area or opening protected against the penetration of smoke

split astragal
n. an astragal constructed of two pieces; each piece being mounted on either door of the pair, and abutting to create a seal

split finish
adj. of or pertaining to a lockset whose finish is different on each side of the door

split hub
n. a two-piece hub which can allow motion from one side of a swivel spindle while preventing it from the other side

spring hinge
n. a hinge incorporating a mechanism to apply automatic closing force

stand alone
n. 1.a self contained electronic lock device, 2. an electronic closer/holder device with a built in detector.

standards
n. a set of specifications relating to materials, finishes, construction, resistance, or strength that typically establish a minimum acceptable value

stile
n. the vertical construction member located on either edge of a door

strike
n. a bolt receptacle typically mounted in the door jamb or the floor

surface closers
n. door closers that are mounted to the surface of the door or frame

surface pull
n. a handle or grip attached to the surface of a door or drawer

T-
t-b
abb. tip-to-bow

tactile
adj. of or pertaining to a knob, lever or other device to open a door, which conveys a special sense of touch; typically used as a warning to the visually impaired of danger on the other side of the door

tailpiece
n. an actuator attached to the rear of the cylinder, parallel to the plug, typically used on rim, key-in-knob or special application cylinders

tamper resistant fastener
n. any one of several screws or nuts which have a specialized head, requiring a special access tool for removal

template
n. a pattern used to mark cutout locations for hardware installation

threaded rose
n. a rose with an internally threaded ferrule

throw
n. the distance a bolt or latch projects from the faceplate or case of a lock in the extended position

thumbpiece
n. a generally flat, projecting latch actuator found above a grip handle and depressed by the thumb

time delay
n. and adj. a feature which prevents operation until a set amount of time has elapsed. Activation normally begins when access, egress or other unlocking is desired.

time delay lock
n. a lock that has a mechanism for preventing unlocking until a specific amount of time has passed

TMK
abb. top master key

top jamb mount
n. surface application of a door closer body directly to the header with the arms arms attached perpendicular to the door.

touch bar
n. a type of exit device actuator which typically does not pivot and retracts the bolt with a minimum of pressure

touch pad
n. 1. an exit device actuator with a paddle shape, 2. a remote door opener activator, typically electric or electronic, which facilitates handicap access track mount
n. usually referred to door closer mountings on the push or pull side of the door which utilizes a track and slide mechanism that eliminates arms protruding from the door or frame

TS 93-DORMA term
n. Model Number for DORMA's Cam and Roller surface mounted door closer. 'TS' is 'Tuerschliesser', German word for door closer.

trim
n. exposed components of a lockset or latchset, which allow operation, enhance appearance or provide protection

tubular lockset
n. a bored lockset whose latch or bolt locking mechanism is contained in the component installed into the edge bore

U-
UL
abb. Underwriters Laboratories

UL listed
adj. listed in a directory as having passed specific Underwriters Laboratories testing

uncombinated
adj. 1. of or pertaining to a cylinder which is or is to be supplied without keys, tumblers and springs, 2. of or pertaining to a lock, cylinder or key in which the combination has not been set

W-
Warnock Hersey
n. an independent testing laboratory

working trim
n. lock or exit device trim which activates a mechanism

Z-
zero bitted
adj. of or pertaining to a cylinder which is or is to be combinated to keys cut to the manufacturer's reference number "0" bitting

   
       
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