North Carolina Practice Locksmith
Exam with 100% Correct Answers
2024
A
VI
n. 1. the number(s) which represent(s) the dimensions of the key
TU
2. the actual cut(s) or combination of a
key - ANSWER Bitting
n. a designation, unrelated to the bitting, assigned to a particular key combination for
IS
future reference when additional keys or cylinders may be needed - ANSWER Blind
Code
M
n. a hand held key bitting punch, often incorporating a trigger-like handle - ANSWER
Clipper
O
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",
A
2. a standard for Life Safety, structural integrity, fire safety, etc., either incorporated into
the statutes of a given jurisdiction, or a model standard - ANSWER Code
N
n. a key cut to a specific code rather than duplicated from a pattern key. it may or may
JP
not conform to the lock manufacturer's specifications - ANSWER Code Key
n. a code key which conforms to the lock manufacturer's specifications - ANSWER
Code Original Key
n. the group of numbers which represent the bitting of a key and/or the tumblers of a
lock or cylinder - ANSWER Combination
n. the bottom of a key cut - ANSWER Cut Root
,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 - ANSWER Cut Root Shape
n. a set of keys used to make a code original key on a key duplicating machine to a lock
manufacturer's given set of key bitting specifications. Each key is cut with the correct
spacing to one depth only in all bitting positions, with one key for each depth. -
ANSWER Depth Key Set
A
n. a series of blind codes and bittings which are directly related to those of another
VI
bitting list - ANSWER Derived Series
n. a designation assigned to a particular key which includes the actual combination of
TU
the key - ANSWER Direct Code
n. the dimension obtained by adding the root depth of a key cut to the length of its
corresponding bottom pin which establishes a perfect shear line. This will not
IS
necessarily be the same as the actual plug diameter. - ANSWER Effective Plug
Diameter
n. the maximum allowable difference between adjacent cut depths - ANSWER
M
Maximum Adjacent Cut Specification
O
abb. maximum adjacent cut specification - ANSWER "MACS"
n. the dimension from the bottom of a cut on a key to the bottom of the blade -
A
ANSWER Root Depth
N
n. a location in a cylinder at which specific tumbler surfaces must be aligned, removing
obstruction(s) which prevented the plug from moving - ANSWER Shear Line
JP
n. the dimensions from the stop to the center of the first cut and/or to the centers of
successive cuts - ANSWER Spacing
n. the part of a key from which all cuts are indexed and which determines how far the
key enters the keyway - ANSWER Stop (of a key)
n. that portion of the cylinder shell which normally houses the pin chambers, especially
those of a key-inknob
, cylinder or certain rim cylinders - ANSWER Bible
n. 1. a tool used to cut the keyway into the cylinder plug 2. v. to cut the keyway into a
cylinder plug with a
broach - ANSWER Broach
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 - ANSWER CAM
A
n. any cavity in a cylinder plug and/or shell which houses the tumblers - ANSWER
VI
Chamber
n. a keyway which has been enlarged to accept more than one key section, often key
TU
sections of more
than one manufacturer - ANSWER Composite Keyway
n. 1. a flat tumbler which must be drawn into the cylinder plug by the proper key so that
IS
none of its
extremities extends into the shell 2. a flat, usually rectangular tumbler with a gate which
must be aligned
with a sidebar by the proper key - ANSWER Disc Tumbler
M
n. a set of top pins of different lengths. Usage is based on the height of the rest of the
O
pin stack, in order
to achieve a uniform pin stack height. See also "compensate drivers" - ANSWER
Graduated Drivers
A
n. a usually uniform increase or decrease in the successive depths of a key cut which
N
must be matched
by a corresponding change in the tumblers - ANSWER Increment
JP
n. a pin tumbler cylinder with a diameter of 2.0", whose pins, springs, key, etc. may also
be proportionally
increased in size. It is frequently used in prison locks - ANSWER Mogul Cylinder
n. a threaded cylinder typically used in mortise locks of American manufacture -
ANSWER Mortise Cylinder
Exam with 100% Correct Answers
2024
A
VI
n. 1. the number(s) which represent(s) the dimensions of the key
TU
2. the actual cut(s) or combination of a
key - ANSWER Bitting
n. a designation, unrelated to the bitting, assigned to a particular key combination for
IS
future reference when additional keys or cylinders may be needed - ANSWER Blind
Code
M
n. a hand held key bitting punch, often incorporating a trigger-like handle - ANSWER
Clipper
O
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",
A
2. a standard for Life Safety, structural integrity, fire safety, etc., either incorporated into
the statutes of a given jurisdiction, or a model standard - ANSWER Code
N
n. a key cut to a specific code rather than duplicated from a pattern key. it may or may
JP
not conform to the lock manufacturer's specifications - ANSWER Code Key
n. a code key which conforms to the lock manufacturer's specifications - ANSWER
Code Original Key
n. the group of numbers which represent the bitting of a key and/or the tumblers of a
lock or cylinder - ANSWER Combination
n. the bottom of a key cut - ANSWER Cut Root
,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 - ANSWER Cut Root Shape
n. a set of keys used to make a code original key on a key duplicating machine to a lock
manufacturer's given set of key bitting specifications. Each key is cut with the correct
spacing to one depth only in all bitting positions, with one key for each depth. -
ANSWER Depth Key Set
A
n. a series of blind codes and bittings which are directly related to those of another
VI
bitting list - ANSWER Derived Series
n. a designation assigned to a particular key which includes the actual combination of
TU
the key - ANSWER Direct Code
n. the dimension obtained by adding the root depth of a key cut to the length of its
corresponding bottom pin which establishes a perfect shear line. This will not
IS
necessarily be the same as the actual plug diameter. - ANSWER Effective Plug
Diameter
n. the maximum allowable difference between adjacent cut depths - ANSWER
M
Maximum Adjacent Cut Specification
O
abb. maximum adjacent cut specification - ANSWER "MACS"
n. the dimension from the bottom of a cut on a key to the bottom of the blade -
A
ANSWER Root Depth
N
n. a location in a cylinder at which specific tumbler surfaces must be aligned, removing
obstruction(s) which prevented the plug from moving - ANSWER Shear Line
JP
n. the dimensions from the stop to the center of the first cut and/or to the centers of
successive cuts - ANSWER Spacing
n. the part of a key from which all cuts are indexed and which determines how far the
key enters the keyway - ANSWER Stop (of a key)
n. that portion of the cylinder shell which normally houses the pin chambers, especially
those of a key-inknob
, cylinder or certain rim cylinders - ANSWER Bible
n. 1. a tool used to cut the keyway into the cylinder plug 2. v. to cut the keyway into a
cylinder plug with a
broach - ANSWER Broach
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 - ANSWER CAM
A
n. any cavity in a cylinder plug and/or shell which houses the tumblers - ANSWER
VI
Chamber
n. a keyway which has been enlarged to accept more than one key section, often key
TU
sections of more
than one manufacturer - ANSWER Composite Keyway
n. 1. a flat tumbler which must be drawn into the cylinder plug by the proper key so that
IS
none of its
extremities extends into the shell 2. a flat, usually rectangular tumbler with a gate which
must be aligned
with a sidebar by the proper key - ANSWER Disc Tumbler
M
n. a set of top pins of different lengths. Usage is based on the height of the rest of the
O
pin stack, in order
to achieve a uniform pin stack height. See also "compensate drivers" - ANSWER
Graduated Drivers
A
n. a usually uniform increase or decrease in the successive depths of a key cut which
N
must be matched
by a corresponding change in the tumblers - ANSWER Increment
JP
n. a pin tumbler cylinder with a diameter of 2.0", whose pins, springs, key, etc. may also
be proportionally
increased in size. It is frequently used in prison locks - ANSWER Mogul Cylinder
n. a threaded cylinder typically used in mortise locks of American manufacture -
ANSWER Mortise Cylinder
