(n.) The bow of a key which is unidentifiable
to a particular lock manufacturer.
Source: Lock Industry Standards and Training
(LIST) Council
NFPA 101
(n.) National Fire Protection Association
life safety code.
Source: Lock Industry Standards and Training
(LIST) Council
NFPA 80
(n.) National Fire Protection Association
standards for doors and windows.
Source: Lock Industry Standards and Training
(LIST) Council
NFS
(abb.) Non-Fail Safe
Source: Lock Industry Standards and Training
(LIST) Council
Nib Ward
(n.) A ward formed from a lock case by
bending part of the case into the path
of the key.
Source: Lock Industry Standards and Training
(LIST) Council
Nickel Silver
(n.) A brass alloy containing nickel
used in making some key blanks and tumblers.
Source: Lock Industry Standards and Training
(LIST) Council
Night Latch
(n.) A rim mounted auxiliary latch bolt.
Source: Lock Industry Standards and Training
(LIST) Council
NKR
(abb.) Non Key Retaining
Source: Lock Industry Standards and Training
(LIST) Council
NLSA
(abb.) National Locksmith Suppliers Association
Source: Lock Industry Standards and Training
(LIST) Council
NMK
(abb.) A notation used to indicate "not
master keyed" and is suffixed in
parentheses to a regular keying symbol.
It indicates that the cylinder is not
to be operated by the master key(s) specified
in the regular keying symbol; e.g., AB6(NMK).
Source: Lock Industry Standards and Training
(LIST) Council
Nominal Keyset
(n.) A keyset listed with an "X" prefix
in a cross keyed cylinder designation.
Source: Lock Industry Standards and Training
(LIST) Council
Non Key Retaining
(adj.) Of or pertaining to a lock whose
key can be removed in both the locked
and unlocked positions.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Control Chamber
(n.) A chamber in an IC which does not
have a separate shear line for the control
function.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Fail Safe
(adj.) A feature of a security device
designed to remain engaged, for security
purposes, during a power loss.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Handed
(adj.) Pertaining to hardware that is
manufactured in a way, which allows installation
on doors of any orientation without requiring
modification or adjustment to accommodate
the door orientation.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Keyed
(adj.) Having no provision for key operation
Note: This term also includes privacy
function locksets operated by an emergency
key.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Original Key Blank
(n.) Any key blank other than an original.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Removable Key
(adj.) A key which has one or more cuts
on it which trap the key in the lock
upon insertion.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Removable Pin
(n.) Pertaining to a hinge whose pin
can not be removed when the door is closed.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Reversible
(n.) Door hardware whose hand cannot
be changed in the field.
Source: Lock Industry Standards and Training
(LIST) Council
Non-Sized Closer
(n.) A door closer with infinitely adjustable
closing force between specific sizes.
Source: Lock Industry Standards and Training
(LIST) Council
Nose
(n.) The part of a non-cylinder lock
which contains the keyway and rotates
within a horn.
Source: Lock Industry Standards and Training
(LIST) Council
Nose Puller
(n.) A tool used to remove the nose of
a lever tumbler lock and allow access
to the tumblers.
Source: Lock Industry Standards and Training
(LIST) Council
NRK
(abb.) Non-Removable Key
Source: Lock Industry Standards and Training
(LIST) Council
NRP
(abb.) Non-Removable Pin
Source: Lock Industry Standards and Training
(LIST) Council
NSO
(abb.) National Safemans Organization
Source: Lock Industry Standards and Training
(LIST) Council
NSP
(abb.) National Service Provider
Source: Lock Industry Standards and Training
(LIST) Council
NUR
(abb.) Nurse's Key
Source: Lock Industry Standards and Training
(LIST) Council
Nurse's Key
(n.) A selective master key used in a
hospital keying system.
Source: Lock Industry Standards and Training
(LIST) Council
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