A nut assembly includes a nut and an carrier. The nut defines a number of latching grooves. The carrier includes a planar board and a number of flexible holding elements protruding from the planar board. Each flexible holding element is releasably latched in one of the latching grooves to latch the carrier to the nut. The carrier is capable of moving relative to the nut from a first state to a second state, so the flexible holding elements slide out of the latching grooves to release the carrier from the nut.