UT5200 Series - Corbin Russwin

Helpful TermsUT5200Abrasive CoatHard granular material applied to aknob or lever to provide a non-sliptactile surface for the visually impaired.Auxiliary LatchboltA supplementary latch which, whenthe door is closed, automaticallydeadlocks the latchbolt. Protects thelatchbolt from forced retraction or"credit carding."BacksetThe distance from the front of thelock to the centerline of the cylinderor knob/lever hub.BevelThe angle of the edge of a door inrelation to the inside and outsidesurfaces of the stile. The mostcommon bevel for commercial doors is1/8" in 2".Box StrikeA strike equipped with an enclosurebehind the hole(s) for the latchboltand/or deadbolt. Protects the strikearea from mortar and cement.ChassisThe housing of a lockset, containingmost of the working parts.Curved Lip StrikeA strike with the lip curved to conformto the detail of the door frame.FrontThe part of a lock visible on the edgeof a door.HandThe direction a door swings.KnurlingA permanently applied tactile warningengraved in the metal of a knob orlever to warn the visually impaired ofdangerous conditions on the otherside of the door.LatchboltA lock component having a beveledend that projects from the lock frontbut may be forced back into thelockcase by end pressure or drawnback by action of the retractor. Whenthe door is closed, the latchboltprojects into a hole provided in thestrike, holding the door in the closedposition.Lead LinedPertains to a lockset whose trim has alining of lead to prevent the passageof radiation. Generally used in hospitalapplications.Lip of StrikeThe projecting part of a strike whichfirst engages the latch; may be curvedor straight.ReturnThe part of a lever handle whichangles or turns back toward theface of the door. Also, the distancebetween the end of the return of thelever and the surface of the door.StrikeA metal plate that is pierced orrecessed to receive the deadbolt orlatchbolt of a lock (sometimes called akeeper).ThrowThe distance that a lock's deadbolt orlatchbolt projects when in the lockedposition. The effective throw is thedistance that a latchbolt projects whendeadlocked.Wrought Strike BoxA metal box mounted behind thestrike to protect the strike openingfrom mortar or cement.Keying and Cylinder TermsConcealed Key Control (CKC)The marking of standard key symbolson a cylinder in a location which is notvisible once the cylinder is installed.Construction CoreAn interchangeable core fortemporary use during construction.It is replaced by the permanent corewhen construction personnel nolonger need access.Construction Master Keying (CMK)A cylinder preparation which allowstemporary access by constructionpersonnel.Control KeyA key used to remove and installinterchangeable cores.CylinderA lock component containing thecombination which determines whichkeys will operate.Interchangeable Core (IC)A cylinder which can be removed andinstalled quickly with a control key bynon-skilled personnel when rekeying isrequired.Key SectionThe cross-section of a key blade, asviewed from bow to tip.Key SymbolA letter/number combination in standardindustry format (e.g., 1AA, AA1, etc)which indicates exactly how a key orcylinder fits into a keying system.KeywayThe opening in a cylinder plugthrough which the key enters.Master KeyingPreparation of a cylinder to operatewith keys of different levels of access.Master Ring CylinderA cylinder which offers a wider rangeof keying.Visual Key Control (VCK)The marking of standard key symbolson keys and on the visible portion ofthe front of a cylinder.UT5200.1045090-7/13