ASTM_F_471_-_76_2002.pdf

Designation:F 471 76(Reapproved 2002)Standard Terminology Relating toCombination Locks1This standard is issued under the fixed designation F 471;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.INTRODUCTIONAll terms are listed alphabetically.When a subsidiary term is defined in conjunction with thedefinition of a more generic term,an alphabetically listed cross reference is provided.boltthe component or part of a combination lock that locksor blocks another mechanism from operating until it isretracted.burglar-resistant spindlea tapered,shouldered,or otherspecially designed and treated spindle intended to resistpunching,pulling,and bination change keya key used in resetting a keychange combination.coverthe section of the lock case designed to be removed foraccess to components within the case.curba component for holding the tumblers in place.diala numerically calibrated part used to align the tumblersand operate the lock.dial and ring(spy-resistant)a dial and ring designed torestrict the unauthorized observation of combination dialing.dial shielda shroud to shield the dial from unauthorizedobservation of combination dialing.drive cama cam that actuates the tumblers by a drive pin andis gated to retract or accept a locking mechanism.drive pina protrusion on or through a drive cam or tumblerwhich drives or turns the next tumbler.fencea part of the lever that fits into tumbler gates,permit-ting the lever to engage the drive cam.flya part that makes contact with the drive pin for rotation ofthe tumblers.gate covera component to prevent the lever from enteringthe tumbler gateway while changing combination.hand of combination,lock installationa type of lockinstallation that is determined by the position of the lock boltviewed from the cover side of the door,that is,vertical up,vertical down,right hand,or left hand.index,changingthe mark on the dial ring used whenchanging the combination.index,L.O.B.C.(locked on by combination)the mark on thedial ring used to set the combination so the back cover canbe removed.index,openingthe mark on the dial ring used when dialingthe combination to open the lock.inner spindle assemblya component in some manipulation-resistant locks that connects the knob with the cam slide.key locking diala dial that can be locked with a key toprevent rotation.key locking dial ringa dial ring containing a key lock tolock dial and prevent rotation.knoba component of some manipulation-resistant-locks thatis rotated on the dial to operate the cam slide.levera part or component that retracts the bolt after align-ment of proper combination.lever screwattached lever to the bolt.lever springapplies directional force to the lever.locating bossan integral part of the case used to align thelock in mounting(not used in all locks).lock casethe housing into which all components parts areinstalled or attached.manipulation resistant locka combination lock designed soas to resist manipulation.outside drivea lock that is gear-driven by a spindle locatedoutside the lock case on either the end,top,or bottom of thelock case.relocking devicea mechanism separate from the combina-tion lock designed to block the safe bolt work if the lock ispunched.It may also incorporate a thermal or shock-releasing device.relocking triggera component of the combination lockdesigned to block the bolt if the spindle is punched.removable diala dial that is removable from the spindle.retaining ringa component that holds the tumbler pack onthe tumbler post.spindlea component or part that connects the dial and drivecam.spline keya part that secures the position of drive cam on aspindle in relation to correct dial calibrations.table nuta hexagon nut used to attach the dial ring to thetube.1This terminology is under the jurisdiction ofASTM Committee F12 on SecuritySystems and Equipment and is the direct responsibility of Subcommittee F 12.91onDefinitions and Nomenclature.Current edition approved Sept.24,1976.Published December 1976.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.tubethe component that encloses the spindle.It is attached tothe lock horn and dial ring(not used in all lock designs).tube hornan integral part of the case to which the tube isattached(not used in all locks).tumbler,hand changean assembly,usually in the form of acircular disk,with a gate designed to accept a fence.Whenreleased by hand,the position of the gate may be set in orderto change the combination.tumbler,hole changea component,usually in the form of acircular disk,into which a drive pin may be inserted at aselected position,to change the combination.tumbler,key changean assembly,usually in the form of acircular disk,with a gate designed to accept a fence.Whe