A slider lock assembly is disclosed, comprising a pair of male slider and female slider releasably coupled together by a lock tumbler pivotally mounted in a casing, the male slider having an integral extension with a lock cavity engageable with the lock tumbler. The lock tumbler is both rotatable and linearly moveable and operatively associated with dial device or a key-operated latch so that the two sliders can be coupled together selectively in a provisionally locked state or in a completely locked state.