NORTH CAROLINA PRACTICE LOCKSMITH EXAM QUESTIONS AND ANSWERS 2025
n. 1. the number(s) which represent(s) the dimensions of the key
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 future reference
when additional keys or cylinders may be needed - (ANSWER)Blind Code
n. a hand held key bitting punch, often incorporating a trigger-like handle - (ANSWER)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 - (ANSWER)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 - (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
,NORTH CAROLINA PRACTICE LOCKSMITH EXAM QUESTIONS AND ANSWERS 2025
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
n. a series of blind codes and bittings which are directly related to those of another bitting list -
(ANSWER)Derived Series
n. a designation assigned to a particular key which includes the actual combination of 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 necessarily be the same as the actual
plug diameter. - (ANSWER)Effective Plug Diameter
n. the maximum allowable difference between adjacent cut depths - (ANSWER)Maximum Adjacent Cut
Specification
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 - (ANSWER)Root Depth
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
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)
, NORTH CAROLINA PRACTICE LOCKSMITH EXAM QUESTIONS AND ANSWERS 2025
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
n. any cavity in a cylinder plug and/or shell which houses the tumblers - (ANSWER)Chamber
n. a keyway which has been enlarged to accept more than one key section, often key 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 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
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" - (ANSWER)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 - (ANSWER)Increment
n. a pin tumbler cylinder with a diameter of 2.0", whose pins, springs, key, etc. may also be
proportionally
n. 1. the number(s) which represent(s) the dimensions of the key
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 future reference
when additional keys or cylinders may be needed - (ANSWER)Blind Code
n. a hand held key bitting punch, often incorporating a trigger-like handle - (ANSWER)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 - (ANSWER)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 - (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
,NORTH CAROLINA PRACTICE LOCKSMITH EXAM QUESTIONS AND ANSWERS 2025
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
n. a series of blind codes and bittings which are directly related to those of another bitting list -
(ANSWER)Derived Series
n. a designation assigned to a particular key which includes the actual combination of 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 necessarily be the same as the actual
plug diameter. - (ANSWER)Effective Plug Diameter
n. the maximum allowable difference between adjacent cut depths - (ANSWER)Maximum Adjacent Cut
Specification
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 - (ANSWER)Root Depth
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
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)
, NORTH CAROLINA PRACTICE LOCKSMITH EXAM QUESTIONS AND ANSWERS 2025
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
n. any cavity in a cylinder plug and/or shell which houses the tumblers - (ANSWER)Chamber
n. a keyway which has been enlarged to accept more than one key section, often key 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 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
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" - (ANSWER)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 - (ANSWER)Increment
n. a pin tumbler cylinder with a diameter of 2.0", whose pins, springs, key, etc. may also be
proportionally
