NORTH CAROLINA
PRACTICE
LOCKSMITH EXAM
n. 1. the number(s) which represent(s) the dimensions of the key
2. the actual cut(s) or combination of a
key - Answers- Bitting
n. a designation, unrelated to the bitting, assigned to a particular key combination for
future reference when additional keys or cylinders may be needed - Answers- Blind
Code
n. a hand held key bitting punch, often incorporating a trigger-like handle - Answers-
Clipper
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 - Answers- Code
n. a key cut to a specific code rather than duplicated from a pattern key. it may or may
not conform to the lock manufacturer's specifications - Answers- Code Key
n. a code key which conforms to the lock manufacturer's specifications - Answers-
Code Original Key
n. the group of numbers which represent the bitting of a key and/or the tumblers of a
lock or cylinder - Answers- Combination
,n. the bottom of a key cut - Answers- 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 - Answers- 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. -
Answers- Depth Key Set
n. a series of blind codes and bittings which are directly related to those of another
bitting list - Answers- Derived Series
n. a designation assigned to a particular key which includes the actual combination of
the key - Answers- 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
necessarily be the same as the actual plug diameter. - Answers- Effective Plug
Diameter
n. the maximum allowable difference between adjacent cut depths - Answers-
Maximum Adjacent Cut Specification
abb. maximum adjacent cut specification - Answers- "MACS"
n. the dimension from the bottom of a cut on a key to the bottom of the blade -
Answers- Root Depth
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 - Answers- CAM
n. any cavity in a cylinder plug and/or shell which houses the tumblers - Answers-
Chamber
n. a keyway which has been enlarged to accept more than one key section, often key
sections of more
than one manufacturer - Answers- Composite Keyway
n. 1. a flat tumbler which must be drawn into the cylinder plug by the proper key so that
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 - Answers- Disc Tumbler
, n. a set of top pins of different lengths. Usage is based on the height of the rest of the
pin stack, in order
to achieve a uniform pin stack height. See also "compensate drivers" - Answers-
Graduated Drivers
n. a usually uniform increase or decrease in the successive depths of a key cut which
must be matched
by a corresponding change in the tumblers - Answers- Increment
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 - Answers- Mogul Cylinder
n. a threaded cylinder typically used in mortise locks of American manufacture -
Answers- Mortise Cylinder
n. a pin tumbler, usually a top pin, which resembles a mushroom. It is typically used to
increase pick
resistance - Answers- Mushroom Pin
adj. 1. of or pertaining to a keyway with one or more wards on each side projecting
beyond the vertical
center line of the keyway to hinder picking 2. of or pertaining to a key blank made to
enter such a keyway - Answers- Paracentric
n. a mortise cylinder of 3/4" diameter - Answers- Peanut Cylinder
n. the corresponding hole drilled into the cylinder shell and/or plug to accept the pin(s)
and spring - Answers- Pin Chamber
n. all the tumblers in a given pin chamber, see also"pin stack height" - Answers- Pin
Stack
n. the measurement of a pin stack, often expressed in units of the lock manufacturer's
increment or as an actual dimension - Answers- Pin Stack Height
n. the part of a cylinder which contains the keyway, with tumbler chambers usually
corresponding to those in the cylinder shell - Answers- Plug
n. a tool used to allow removal of the cylinder plug while retaining the top pins, springs,
and/or other
components within the shell - Answers- Plug Follower
n. a location in a cylinder at which specific tumbler surfaces must be aligned, removing
obstruction(s) which prevented the plug from moving - Answers- Shear Line
PRACTICE
LOCKSMITH EXAM
n. 1. the number(s) which represent(s) the dimensions of the key
2. the actual cut(s) or combination of a
key - Answers- Bitting
n. a designation, unrelated to the bitting, assigned to a particular key combination for
future reference when additional keys or cylinders may be needed - Answers- Blind
Code
n. a hand held key bitting punch, often incorporating a trigger-like handle - Answers-
Clipper
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 - Answers- Code
n. a key cut to a specific code rather than duplicated from a pattern key. it may or may
not conform to the lock manufacturer's specifications - Answers- Code Key
n. a code key which conforms to the lock manufacturer's specifications - Answers-
Code Original Key
n. the group of numbers which represent the bitting of a key and/or the tumblers of a
lock or cylinder - Answers- Combination
,n. the bottom of a key cut - Answers- 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 - Answers- 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. -
Answers- Depth Key Set
n. a series of blind codes and bittings which are directly related to those of another
bitting list - Answers- Derived Series
n. a designation assigned to a particular key which includes the actual combination of
the key - Answers- 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
necessarily be the same as the actual plug diameter. - Answers- Effective Plug
Diameter
n. the maximum allowable difference between adjacent cut depths - Answers-
Maximum Adjacent Cut Specification
abb. maximum adjacent cut specification - Answers- "MACS"
n. the dimension from the bottom of a cut on a key to the bottom of the blade -
Answers- Root Depth
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 - Answers- CAM
n. any cavity in a cylinder plug and/or shell which houses the tumblers - Answers-
Chamber
n. a keyway which has been enlarged to accept more than one key section, often key
sections of more
than one manufacturer - Answers- Composite Keyway
n. 1. a flat tumbler which must be drawn into the cylinder plug by the proper key so that
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 - Answers- Disc Tumbler
, n. a set of top pins of different lengths. Usage is based on the height of the rest of the
pin stack, in order
to achieve a uniform pin stack height. See also "compensate drivers" - Answers-
Graduated Drivers
n. a usually uniform increase or decrease in the successive depths of a key cut which
must be matched
by a corresponding change in the tumblers - Answers- Increment
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 - Answers- Mogul Cylinder
n. a threaded cylinder typically used in mortise locks of American manufacture -
Answers- Mortise Cylinder
n. a pin tumbler, usually a top pin, which resembles a mushroom. It is typically used to
increase pick
resistance - Answers- Mushroom Pin
adj. 1. of or pertaining to a keyway with one or more wards on each side projecting
beyond the vertical
center line of the keyway to hinder picking 2. of or pertaining to a key blank made to
enter such a keyway - Answers- Paracentric
n. a mortise cylinder of 3/4" diameter - Answers- Peanut Cylinder
n. the corresponding hole drilled into the cylinder shell and/or plug to accept the pin(s)
and spring - Answers- Pin Chamber
n. all the tumblers in a given pin chamber, see also"pin stack height" - Answers- Pin
Stack
n. the measurement of a pin stack, often expressed in units of the lock manufacturer's
increment or as an actual dimension - Answers- Pin Stack Height
n. the part of a cylinder which contains the keyway, with tumbler chambers usually
corresponding to those in the cylinder shell - Answers- Plug
n. a tool used to allow removal of the cylinder plug while retaining the top pins, springs,
and/or other
components within the shell - Answers- Plug Follower
n. a location in a cylinder at which specific tumbler surfaces must be aligned, removing
obstruction(s) which prevented the plug from moving - Answers- Shear Line
