NC Locksmith Exam Section 2| Exam Questions with Complete Solutions 100%
Solved| Grade A+
Mushroom pin a pin tumbler, usually a top pin, which resembles a mushroom. It is typically
used to increase pick resistance
Paracentric Of or pertaining to a keyway with one or more wards on each side projecting
beyond the vertical center line of the keyway
Peanut cylinder a mortise cylinder of 3/4" diameter
Pin chamber the corresponding hole drilled into the cylinder shell and/or plug to accept pins
and springs
Pin stack all the tumblers in a given pin chamber, see also pin stack height
Pin stack height the measurement of a pin stack, often expressed in units of the lock
manufacturers increment or as an actual dimension
Plug the part of the cylinder which contains the keyway, with the tumbler chambers usually
corresponding to those in the cylinder shell
Plug follower a tool used to allow the removal of the cylinder plug while retaining the the
top pins, springs and/or other components within
Plug holder a holding fixture which assist in the loading of tumblers into a cylinder
Solved| Grade A+
Mushroom pin a pin tumbler, usually a top pin, which resembles a mushroom. It is typically
used to increase pick resistance
Paracentric Of or pertaining to a keyway with one or more wards on each side projecting
beyond the vertical center line of the keyway
Peanut cylinder a mortise cylinder of 3/4" diameter
Pin chamber the corresponding hole drilled into the cylinder shell and/or plug to accept pins
and springs
Pin stack all the tumblers in a given pin chamber, see also pin stack height
Pin stack height the measurement of a pin stack, often expressed in units of the lock
manufacturers increment or as an actual dimension
Plug the part of the cylinder which contains the keyway, with the tumbler chambers usually
corresponding to those in the cylinder shell
Plug follower a tool used to allow the removal of the cylinder plug while retaining the the
top pins, springs and/or other components within
Plug holder a holding fixture which assist in the loading of tumblers into a cylinder
