valet key
n. an automotive key that operates all locks except storage compartments, on a vehicle where there is also a master key to operate all locks

VATS
abb. Vehicle Anti-Theft System

VATS interrogator
n. a device which determines the resistor value required to complete the ignition circuit. It also reads the value of the resistor in a VATS key.

vault
n. a secure room in which objects of value are stored

VD
abb. vertical down

Vehicle Anti-Theft System
n. an electronic system in some General Motors vehicles which uses a resistor pellet of varying value imbedded in a mechanical ignition key

vertical down
adj. of or pertaining to a mounting orientation of a safe or vault lock such that the bolt projects downward

vertical group master key
n. the two-pin master key for all combinations listed in all blocks in a line down a page in the standard progression format

vertical rod exit device
n. an exit device with bolts typically at the top and bottom of a door connected to a central mechanism by rods

vertical up
adj. of or pertaining to a mounting orientation of a safe or vault lock such that the bolt projects upward

VGM
abb. vertical group master key

virtual keyway
n. a secondary locking mechanism combination used as a method of discriminating between suppliers for key control

vise arm
n. the movable jaw of a key machine vise

vise nut
n. a nut, with an external design to facilitate use without tools, that works in conjunction with the vise stud to tighten the vise on a key machine

vise stud
n. a threaded post mounted to the carriage of a key machine to provide a means of tightening the vise

visual key control
n. a specification that all keys and the visible portion of the front of all lock cylinders be stamped with standard keying symbols

VKC
abb. visual key control

VU
abb. vertical up