Dead bolt combination lock

A dead bolt combination lock comprising an elongated housing having a front wall, a pair of side walls, and a pair of end walls, a combination lock mechanism mounted in said housing adjacent to said front wall, said front wall having a plurality of slots therein and said lock mechanism including a plurality of dials with peripheral portions exposed through said slots, respectively, a bolt supported in said housing for reciprocative movement along the length of said housing between unlocked and locked positions, one of the end walls of said housing having an opening therethrough and the bolt having a block-portion adapted to project outwardly of said housing through said opening when the bolt is in its locked position, a manual actuator supported for movement along the length of said housing and having a portion extending into said housing through a slot in said front wall of the housing and fixed to the bolt for manually moving the bolt between its unlocked and locked positions, said housing having a rear wall with detent means thereon extending into said housing to engage said bolt, said bolt having means cooperable with said detent means for releasably holding said bolt in its unlocked and locked positions, said lock mechanism having locking means controlled by said dials for preventing said bolt from moving from its locked position until said dials are set to a predetermined unlocking combination.