Hardware Terms(O-Q)五金术语O-Q

Hardware Terms O 

Olive Knuckle Hinge A paumelle hinge with knuckles forming an oval shape.
Overhead Concealed Closer A closer concealed in the head frame with an arm connecting with the door at the top rail.

Hardware Terms P 

Panic Exit Device See Exit Device
Paracentric A term used in connection with cylinder plugs having projections on the sides of the keyway that extend beyond the vertical center line of the keyway.
Passage Function (Hall/Closet) Knob or lever set most commonly used in hallways where a locking feature is not required.
Paumelle A style of hinge embodying a single joint of the pivot type, generally of modern, or streamlined design.
Pin Tumblers Small sliding pins in a lock cylinder, working against coil springs and preventing the cylinder plug from rotating until the pins are raised to the proper alignment by bitting of key.
Pivot See Door Pivot
Plug (of a cylinder) The round part containing the keyway and rotated by the key to transmit motion to the bolt(s).
Preassembled Lock A lock that has all parts assembled as a unit at the factory and which, when installed in a rectangular notch cut into the door edge, requires little or no disassembly.
Prison Lock A heavy lock designed especially for use on jail cells.
Privacy Function (Bed/Bath) Knob or lever set most commonly used in bathroom or bedroom; can be locked from the inside with a push button emergency release feature.
Push Plate A plate applied to the lock stile to protect the door against soiling and wear.

Hardware Terms Q 

Quadrant (Dutch Door) A device for fastening the upper and the lower leaves of a Dutch door.