Hardware Terms(L-N)五金术语(L-N)

Hardware Terms L 

Latch Bolt A beveled spring bolt, usually operated when either the knob or lever is turned, or when the thumbpiece which operates the handleset is pushed down.
Leaf (of a pair of doors) One of the two doors forming a pair of doors.
Left Hand Door If hinges are on the left side of the door when viewing from the outside, door is left handed.
Letterbox Back Plate A plate, similar to a letterbox plate, attached to the inside of a door to allow the passage of mail.
Letterbox Plate A plate attached to the door with an opening to permit insertion of mail.
Lever Handle A horizontal handle for operating the bolt(s) of a lock.
Lever Tumbler Flat tumbler having a pivoted motion actuated by the turning of the key and controlling the locking function.
Lip of a Strike The projecting part on which the latch bolt rides.
Lock Rail (of the door) The horizontal member of a door intended to receive the lock case.
Lock Set A lock, complete with trim, such as knobs, escutcheons or handles.
Lock Stile (of a door) The stile to which the lock is applied as distinguished from the hinge stile.
Loose Joint Hinge A hinge having but two knuckles; the pin is fastened permanently to one knuckle, the other contains the pinhole, whereby the two parts of the hinge can be disengaged by lifting. These hinges are handed.
Loose Pin Hinge A hinge having a removable pin to permit the two parts of the hinge to be separated.

Hardware Terms M 

Magnetic Catch A cupboard catch that uses a magnet to hold the door closed.
Master Key Operates any quantity of cylinders of different individual key changes.
Masterkeying An arrangement of cylinders having individual key changes, which permits them all to be operated by a simple key called a master key
Mono Lock See Preassembled Lock
Mop Plate A narrow plate similar to a kick plate, of sufficient height to protect against the swish of the mop.
Mortise A cavity made to receive a lock or other hardware; also the act of making such a cavity.
Mortise Bolt A door bolt designed to be mortised into a door rather than applied to its surface.
Mortise Lock (or Latch) A lock designed to be installed in a mortise rather than applied to the door's surface.
Mullion A fixed or movable post dividing an opening vertically.

Hardware Terms N 

Nightlatch An auxiliary lock having a spring latch bolt and functioning independently of, and providing additional security to, the regular lock of the door.