(n.) A door having and edge contoured
with an offset creating two surfaces
which form an overlap at the abutting
edge.
Source: Lock Industry Standards and Training
(LIST) Council
Rabbeted Lock
(n.) A lock with a face or front which
is specially formed to use in a rabbeted
door.
Source: Lock Industry Standards and Training
(LIST) Council
Radio Frequency Identification
(n.) An identification technology using
short range radio frequency transmission.
Source: Lock Industry Standards and Training
(LIST) Council
Radiused Blade Bottom
(n.) The bottom of a key blade which
has been radiused to conform to the curvature
of the cylinder plug it is designed to
enter.
Source: Lock Industry Standards and Training
(LIST) Council
Rail
(n.) The horizontal construction member
located on the top and bottom of a door.
Source: Lock Industry Standards and Training
(LIST) Council
Rake (Rake & Hang)
(n.) A picking technique that attempts
to use quick withdrawal of the pick to
set the tumblers.
Source: Lock Industry Standards and Training
(LIST) Council
Random Master Keying
(n.) Any undesirable process used to
master key which uses unrelated keys
to create a system.
Source: Lock Industry Standards and Training
(LIST) Council
Rap
(v.) 1. To unlock a plug from its shell
by striking sharp blows to the spring
side of the cylinder while applying tension
to the plug.
(v.) 2. To unlock a padlock shackle from
its case by striking sharp blows to the
sides in order to disengage the locking
dogs.
Source: Lock Industry Standards and Training
(LIST) Council
Ratchet Lock
(n.) A lock which adjusts to fit different
applications by sliding one part through
another, held by a pawl engaging one
of several cogs.
Source: Lock Industry Standards and Training
(LIST) Council
Rated
(adj.) Of or pertaining to a product's
compliance with one or more recognized
standards such as UL.
Source: Lock Industry Standards and Training
(LIST) Council
Read
(v.) To decode a lock combination visually
without disassembly of the lock or cylinder.
Source: Lock Industry Standards and Training
(LIST) Council
Read Key
(n.) A key which allows access to the
sales and/or customer data on certain
types of cash control equipment (e.g.,
cash register).
Source: Lock Industry Standards and Training
(LIST) Council
Reader
(n.) A device used in an access control
system to interrogate an electronic,
magnetic or optical type of credential.
Source: Lock Industry Standards and Training
(LIST) Council
Rear Drive
(adj.) Of or pertaining to a combination
lock with the wheel pack located between
the dial and the drive cam.
Source: Lock Industry Standards and Training
(LIST) Council
Recombinate
(v.) To change the combination of a lock,
cylinder or key.
Source: Lock Industry Standards and Training
(LIST) Council
Record Safe
(n.) A safe whose primary purpose is
to preserve paper documents against fire.
Source: Lock Industry Standards and Training
(LIST) Council
Recore
(v.) To rekey by installing a different
core.
Source: Lock Industry Standards and Training
(LIST) Council
Redundant Button
(n.) A secondary release switch for an
egress device to allow unlocking in case
of a malfunction of the primary release
switch.
Source: Lock Industry Standards and Training
(LIST) Council
Register Groove
(n.) The reference point in the milling
of a key blade from which some manufacturers
index the bitting depths, and which indexes
the key blade in a keyway.
Source: Lock Industry Standards and Training
(LIST) Council
Register Number
(n.) 1. A reference number, typically
assigned by the lock manufacturer to
an entire master key system.
(n.) 2. A blind code assigned by some
lock manufacturers to higher level keys
in a master key system.
Source: Lock Industry Standards and Training
(LIST) Council
Rekey
(v.) To change the existing combination
of a cylinder or lock.
Source: Lock Industry Standards and Training
(LIST) Council
Relock Trigger
(n.) The part of a safe relocking device
which causes the mechanism to activate.
Source: Lock Industry Standards and Training
(LIST) Council
Relocking Device
(n.) Any device intended to prevent normal
opening of a safe as a result of an attack,
two types are typically used, internal
and external.
Source: Lock Industry Standards and Training
(LIST) Council
Remote Release
(n.) A mechanism for permitting the unlocking
of any lock device at a distance from
the device.
Source: Lock Industry Standards and Training
(LIST) Council
Removable Core
(n.) A key removable core which can only
be installed in one type of cylinder
housing; e.g., rim cylinder or mortise
cylinder or key-in-knob lock.
Source: Lock Industry Standards and Training
(LIST) Council
Removable Cylinder
(n.) A cylinder which can be removed
from a locking device by a key and/or
tool.
Source: Lock Industry Standards and Training
(LIST) Council
Removable Dial
(n.) A combination lock actuator that
may be taken from the lock when not in
use.
Source: Lock Industry Standards and Training
(LIST) Council
Removable Shackle
(adj.) Referring to a type of padlock
which is unlocked by removing the shackle
from the case.
Source: Lock Industry Standards and Training
(LIST) Council
Removal Key
(n.) The part of a two-piece key which
is used to remove its counterpart from
a keyway.
Source: Lock Industry Standards and Training
(LIST) Council
Renter's Key
(n.) A key which must be used together
with a guard key, prep key or electronic
release to unlock a safe deposit lock.
It is usually different for every unit
within an installation.
Source: Lock Industry Standards and Training
(LIST) Council
Repin
(v.) To replace pin tumblers, with or
without changing the existing combination.
Source: Lock Industry Standards and Training
(LIST) Council
Reset Code
(n.) In an electronic lock, a factory-set
or user-set code or combination that
will restore all factory default settings
except the current reset code and the
audit trail.
Source: Lock Industry Standards and Training
(LIST) Council
Reset Key
(n.) 1. A key used to set some types
of cylinders to a new combination. Many
of these cylinders require the additional
use of tools and/or the new operating
key to establish the new combination.
(n.) 2. A key which allows the tabulations
on various types of cash control equipment
(e.g., cash registers) to be cleared
from the records of the equipment.
Source: Lock Industry Standards and Training
(LIST) Council
Resettable Tumbler
(n.) A tumbler which can have its reference
position altered by reorientation within
the cylinder without disassembly.
Source: Lock Industry Standards and Training
(LIST) Council
Resistor Pellet
(n.) The encapsulated resistor with exposed
contacts installed in a key, such as
that for VATS.
Source: Lock Industry Standards and Training
(LIST) Council
Restraint
(n.) A device designed with a shackle
that restricts the movement or actions
of a person, such as handcuffs.
Source: Lock Industry Standards and Training
(LIST) Council
Restricted
(adj.) Of or pertaining to a keyway and
corresponding key blank whose sale and/or
distribution is limited by the lock manufacturer
in order to reduce unauthorized key proliferation.
Source: Lock Industry Standards and Training
(LIST) Council
Retainer
(n.) A component which is clipped, staked,
or driven in place to maintain the working
relationship of other components.
Source: Lock Industry Standards and Training
(LIST) Council
Retainer Pin
(n.) 1. A component seated on a spring,
in the end of a plug, that interacts
with a retainer cap to keep it in place.
(n.) 2. Any non-threaded rod that maintains
the relationship of two or more different
parts.
Source: Lock Industry Standards and Training
(LIST) Council
Retrofit Lever
(n.) A lever handle designed to replace
the knob of a lockset.
Source: Lock Industry Standards and Training
(LIST) Council
Return
(n.) 1. The extension of a cam which
bends back towards the mounting surface
and the measurement of the remaining
distance from the mounting surface to
the end of the cam.
(n.) 2. The distance from a door face
to the tip end of a lever handle.
Source: Lock Industry Standards and Training
(LIST) Council
Reveal
(n.) The distance measured from the trim
surface of the jamb to the leading face
of the door on the stop side when closed.
Source: Lock Industry Standards and Training
(LIST) Council
Reverse Bevel
(adj.) Pertaining to the bevel of a door
which swings towards the outside.
Source: Lock Industry Standards and Training
(LIST) Council
Reverse Keyway
(n.) A keyway shape that is a mirror
image of another.
Source: Lock Industry Standards and Training
(LIST) Council
Reverse Strike
(n.) A strike used for rim mounted hardware
used on reverse bevel doors.
Source: Lock Industry Standards and Training
(LIST) Council
Reversible
(adj.) Pertaining to hardware that is
manufactured in a way, which allows field
assembly or adjustment to accommodate
installation on doors with different
orientations.
Source: Lock Industry Standards and Training
(LIST) Council
Reversible Key
(n.) A usually symmetrical key which
may be inserted either way up to operate
a lock.
Source: Lock Industry Standards and Training
(LIST) Council
RF
(abb.) Radio Frequency
Source: Lock Industry Standards and Training
(LIST) Council
RFID
(abb.) Radio Frequency Identification
Source: Lock Industry Standards and Training
(LIST) Council
RH
(abb.) Right Hand
Source: Lock Industry Standards and Training
(LIST) Council
RHR
(abb.) Right Hand Reverse Bevel
Source: Lock Industry Standards and Training
(LIST) Council
RHVD
(abb.) Right Hand Vertical Down
Source: Lock Industry Standards and Training
(LIST) Council
RHVU
(abb.) Right Hand Vertical Up
Source: Lock Industry Standards and Training
(LIST) Council
Right Hand (Man Door)
(adj.) Pertaining to an inward swinging
door with hinges on the right side, using
the outside of the door as reference.
Source: Lock Industry Standards and Training
(LIST) Council
Right Hand Reverse Bevel (Door)
(adj.) Pertaining to a right handed door
which swings outward.
Source: Lock Industry Standards and Training
(LIST) Council
Rim Cylinder
(n.) A cylinder typically used with surface
applied locks and attached with a back
plate and machine screws. It has a tailpiece
to actuate the lock mechanism.
Source: Lock Industry Standards and Training
(LIST) Council
Rim Exit Device
(n.) An exit device mounted on the door
surface.
Source: Lock Industry Standards and Training
(LIST) Council
Rim Lock
(n.) A lock designed to be mounted on
the surface or rim of a door or object.
Source: Dictionary.com
(n.) A lock or latch typically mounted
on the surface of a door or drawer.
Source: Lock Industry Standards and Training
(LIST) Council
Rim Vertical Rod Exit Device
(n.) A vertical rod exit device mounted
on the door surface.
Source: Lock Industry Standards and Training
(LIST) Council
Ring Key
(n.) A key attached to a ring to be worn
on the finger.
Source: Lock Industry Standards and Training
(LIST) Council
RL
(abb.) The title “Registered Locksmith” as
awarded by ALOA.
Source: Lock Industry Standards and Training
(LIST) Council
RLD
(abb.) Relocking Device
Source: Lock Industry Standards and Training
(LIST) Council
RM
(abb.) Row Master Key
Source: Lock Industry Standards and Training
(LIST) Council
Root Depth
(n.) The dimension from the bottom of
a cut on a key to the bottom of the blade.
Source: Lock Industry Standards and Training
(LIST) Council
Rose
(n.) A usually circular escutcheon.
Source: Lock Industry Standards and Training
(LIST) Council
Rotary File Cutter
(n.) A key machine cutter with very fine
teeth which are formed by stamping, such
as a file.
Source: Lock Industry Standards and Training
(LIST) Council
Rotary Tumbler
(n.) A circular tumbler with one or more
gates. Rotation of the proper key aligns
the tumbler gates at a sidebar, fence
or shackle slot.
Source: Lock Industry Standards and Training
(LIST) Council
Rotating Constant Method
(n.) A method used to progress key bittings
in a master key system, wherein at least
one cut in each key is identical to the
corresponding cut in the top master key.
The identical cut(s) is moved to different
locations in a logical sequence until
each possible planned position has been
used.
Source: Lock Industry Standards and Training
(LIST) Council
Rotating Constant
(n.) One or more cut(s) in a key of any
level which remain constant throughout
all levels and are identical to the top
master key cuts in their corresponding
positrons. The positions where the top
master key cuts are held constant may
be moved, always in a logical sequence.
Source: Lock Industry Standards and Training
(LIST) Council
Round Back
(adj.) Pertaining to a rim cabinet lock
whose mounting flanges and case form
the general shape of a circle when viewed
from the back.
Source: Lock Industry Standards and Training
(LIST) Council
Round Cornered Latch
(adj.) Of or pertaining to a latch mounting
plate with radiused corners.
Source: Lock Industry Standards and Training
(LIST) Council
Rounded Front
(n.) A lock front or face plate that
is radiused to match the edge of the
door.
Source: Lock Industry Standards and Training
(LIST) Council
Row Master Key
(n.) The one-pin master key for all combinations
listed on the same line across a page
in the standard progression format.
Source: Lock Industry Standards and Training
(LIST) Council
RS-485
(std.) An Electronics Industry Association
(EIA) standard for serial multipoint
communications commonly used in online
access control systems for distances
up to 4000 feet.
Source: Lock Industry Standards and Training
(LIST) Council
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