Abstract: A desk/table top is attached to a support structure without the need of separate tools by use of a manually operable attachment mechanism that is mounted on the underside of the top. The attachment mechanism includes a latching lever mounted for pivotal movement and a pair of clamp levers mounted for horizontal linear motion toward and away from one another in response to pivotal motion of the latching lever. The clamp levers include portions which are adapted to extend into openings in hollow tubes that comprise cross beams in the support structure when the top is fixedly attached to the support structure.