A repair/replacement nut plate assembly (133), which is fully preassembled, is provided which can be inserted into an oversized or reworked/reconditioned aperture (131, 131a) of a workpiece (110) after an original nut plate has been removed from the original aperture of the workpiece. The repair/replacement nut plate assembly (133) includes a nut (22), a holding bracket (24), a stem (26), a nut retainer (28), and a sleeve member (132). The sleeve member (132) is configured to be secured to a nut plate assembly (20), of the same type originally used to provide the original nut plate in the original aperture of the workpiece to compensate for material lost from the workpiece during the removal of the original nut plate. The sleeve member (132) allows for the original nut plate assembly (20) to be utilized, with only the securement of the sleeve member (132) to the holding bracket (24) prior to setting.