A lock assembly is provided for releasably coupling a dome of a telecommunications enclosure to a base of the telecommunications enclosure. The lock assembly generally includes a housing having at least one stop, a slider disposed at least partly within the housing and moveable between an extended position for coupling the dome of the telecommunications enclosure to the base of the telecommunications enclosure and a retracted position for uncoupling the dome from the base, and a cam configured to rotate and move the slider between the retracted position and the extended position. The cam is engageable with the at least one stop of the housing to stop rotation of the cam when the slider moves to the retracted position and/or to stop rotation of the cam when the slider moves to the extended position.