Abstract: An assembly station is provided for use in the assembly of disk drive units of the type used in microcomputers, such as personal computers and the like. The assembly station comprises a main platform having a head fixture and a disk fixture for respectively receiving and supporting a head actuator subassembly and a disk subassembly of a disk drive unit. The disk fixture supports the disk subassembly for sliding displacement into precision registry with the actuator subassembly to accommodate facilitated mounting of a housing base onto the actuator and disk subassemblies. In the preferred form of the invention, the assembly station is further adapted to receive and support additional disk drive components for mounting within the housing base. The platform is adapted for inversion to expose these additional disk drive components through platform openings for relatively simple attachment to the housing base at predetermined positions.