Abstract: This invention is related generally to detachable assemblies and more particularly to novel hardware for easily attaching or removing portable members from stationary structures. A quick acting fastener assembly is described for attaching a portable member, such as a toilet seat, to a stationary member, such as a toilet bowl, for example. The portable member carries a pair of headed pins fixed to the margin thereof and projecting outward to mate with receptacles on the stationary member. Said pins and the mating receptacles are of a unique design such that when the pins are inserted into the matching receptacles the portable member is securely fastened to the stationary member, yet can be removed, disengaged, without any adjustments (levers pulled, fasteners removed, etc.). The distinguishing feature of this invention is in the simplicity of the mechanical hardware, the absence of moving parts, springs, fasteners, levers, or removable nuts, etc.