Abstract: A bolt assembly for a deadbolt lock arrangement including a drivable cam in rotational engagement with a follower wheel. A bolt connecting arm pivotally connected to a bolt slidably supported within a main housing body of the bolt assembly and also connected to a follower wheel connecting arm that is connected to the follower wheel, wherein rotation of the drive cam translates to rotational movement of the follower wheel and rotational movement of the follower wheel translates to an extending or retracting positioning of the follower wheel connecting arm so as to extend or retract said bolt connecting arm to an extended position or retracted position thereby placing the bolt in a locked or unlocked configuration.

Abstract: A double cylinder deadlock lock arrangement including a deadlock control tab slidably supported within an internal housing block such that a segment of said deadlock control tab is extendible out from a peripheral edge of the internal housing block to allow for a user operable engagement with said deadlock control tab, wherein slidable retraction of the extended segment of said deadlock control tab by a user at least substantially into the internal housing block subsequently permits operable rotation of an internal rotatable operable cylinder and/or the external key cylinder when a key is received within the slot of an external key cylinder to move the arrangement from a deadlock lock unlocked position to a deadlock lock locked position.