key machine n. any machine designed to cut
keys, See also "key coding machine" and
"key duplicating machine."
key manipulation n. manipulation of an incorrect
key in order to operate a lock or cylinder
key milling n. the grooves machined into the length
of the key blade to allow its entry into the keyway
key override n. a provision allowing interruption or
circumvention of normal operation of a combination
lock or electrical device adj. of or pertaining to such
a provision, as in "key override cylinder"
key override cylinder n. a lock cylinder installed
in a device to provide a key override function
key pull(s) n. a lock specification which indicates
by quantity and orientation the position(s) in which
a key may be withdrawn
key pull position n. any position, of the cylinder
plug at which the key can be removed
key records n. pl. records which typically include
some or all of the following: bitting list, key bitting
array, key system schematic, end user, number of
keys/cylinders issued, names of persons to whom keys
were issued, hardware/keying schedule
Key Records Department n. the department which
is responsible for generating and issuing all lock and
key combinations and maintaining records of them
key retaining adj. 1. of or pertaining to a lock
which must be locked before its key can be removed.
2. of or pertaining to a cylinder or lock which may
prevent removal of a key without the use of an
additional key and/or tool
key section n. the exact cross sectional configuration
of a key blade as viewed from the bow toward the tip
key symbol n. a designation used for a key
combination in the standard key coding system, e.g.,
A, AA, AA1, etc.
key system schematic n. a drawing with blocks
utilizing keying symbols, usually illustrating the
hierarchy of all keys within a master key system.
It indicates the structure and total expansion of
the system.
keyed adj. 1. combinated 2. having provision for
operation by key
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.
keyed random adj. of or pertaining to a cylinder
or group of cylinders selected from a limited
inventory of different key changes. Duplicate bittings
may occur.
keyhole n. the opening through which a non-
cylinder key must pass to enter a lock
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 end user
and the keying system supplier at which the keying
and levels of keying, including future expansion,
are determined and specified
keying kit n. a compartmented container which
holds an assortment of tumblers, springs and/or other
parts
keying schedule n. a detailed specification of the
keying system listing how all cylinders are to be
keyed and the quantities, markings, and shipping
instructions of all keys and/or cylinders to
be provided
keying symbol n. a designation used for a lock
or cylinder combination in the standard key coding
system; e.g., AA1, XAA1, XlX, etc.
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.
keyway ward n. a ward which prevents entry of an
incorrect key into a cylinder or lock
KR abb. 1. keyed random 2. key retaining
KWY abb. keyway
-L-
laminated padlock n. a padlock whose case is
constructed of separate plates usually riveted together
layout tray n. a compartmented container used to
organize cylinder parts during keying or servicing
levels of keying n. pl. the divisions of a master key
system into hierarchies of access, as shown in the
following tables. Note: the standard key coding
system has been expanded to include key symbols for
systems of more than four levels of keying.
TWO LEVEL SYSTEM
Level of
Key Name
ABB.
Key Symbol
Keying
Level II
master key
MK
AA
Level I
change key
CK
1AA, 2AA,
etc.
THREE LEVEL SYSTEM
Level of
Key Name
ABB.
Key Symbol
Keying
Level III
grand
GMK
A
master key
Level II
master key
MK
AA, AB, etc.
Level I
change key
CK
AA1, AA2,
etc.
FOUR LEVEL SYSTEM
Level of
Key Name
ABB.
Key Symbol
Keying
Level IV
great grand GGMK
GGMK
master key
Level III
grand master GMK
A, B, etc.
key
Level II
master key
MK
AA, AB, etc.
Level I
change key
CK
AA1, AA2,
etc.
FIVE LEVEL SYSTEM
Level of
Key Name
ABB.
Key Symbol
Keying
Level V
great great
GGGMK GGGMK
grand master
key
Level IV
great grand GGMK
A, B, etc.
master key
Level III
grand master GMK
AA, AB, etc.
key
Level II
master key
MK
AAA, AAB,
etc.
Level I
change key
CK
AAA1,
AAA2, etc.
SIX LEVEL SYSTEM
Level of
Key Name
ABB.
Key Symbol
Keying
Level VI
great great
GGGMK GGGMK
grand master
key
Level V
great grand GGMK
A, B, etc.
master key
Level IV
grand master GMK
AA, AB, etc.
key
Level III
master key
MK
AAA, AAB,
etc.
Level II
sub-master
SMK
AAAA,
key
AAAB, etc.
Level I
change key
CK
AAAA1,
AAAA2, etc.
Terminology
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