Abstract: A gang locking system for use in furniture cabinets having a plurality of doors or drawers comprises a lock tube which rotates to move a lock bar from a disengaged or open position to an engaged or locked position. Rotation of the lock tube is effected by a lock cam attached to a lock cylinder. The lock cam is a generally rod shaped member having two offsets to constitute a "Z" or zig-zag shape and projects through a pair of slots in the lock tube. The slots in the lock tube have a width only slightly greater than the diameter of the rod-like cam so as to reduce any slack or "play" between the lock cam and the lock tube.