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| GLOSSARY |
National Service Provider
- (n.) A nationwide maintenance contracting company who supplies the sub-contracted services of a local technician to a customer.
Source: Lock Industry Standards and Training (LIST) Council
NCK
- (sym.) Symbol for "no change key," primarily used in hardware schedules.
Source: Lock Industry Standards and Training (LIST) Council
Neck (of a Key)
- (n.) 1. The portion of a bit key between the shoulder and the bit(s).
(n.) 2. The portion of a cylinder key between the shoulder and the bow.
Source: Lock Industry Standards and Training (LIST) Council
Negative Locking
- (n.) Locking achieved solely by spring pressure or gravity which prevents a key cut too deeply from operating a lock or cylinder.
Source: Lock Industry Standards and Training (LIST) Council
Nest
- (n.) A unitized group of safe deposit boxes.
Source: Lock Industry Standards and Training (LIST) Council
See also: "tumbler nest"
Neuter Bow
- (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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