Abstract: A lockable, slammable rotationally actuated latch assembly for use as a latching and locking mechanism on a door or panel of an enclosure or compartment has a mounting pan with a recessed draw and peripheral mounting flange. A rotatable cam shank intersects the mounting pan and has a handle attached to an end of the cam shank on the exterior side of the pan. A latch is rotationally mounted on a latch shank located on the interior side of the mounting pan and is biased into the latched position by a torsion spring. A cam is attached to an end of the cam shank on the interior side of the pan and the cam has a contact edge positioned to contact and rotate the latch upon rotation of the cam shank. An optional latch guide can also be mounted on a latch shank for guiding a striker into a striker receiving cavity formed between the latch and latch guide. A lock assembly may be mounted on the flange of the mounting pan or inside the recessed draw of the pan.