A fixing device includes a heat pipe, a fuser belt, a heater, a fuser pad, a pressure member, and a coupling mechanism. The threads are arranged in at least two groups of the helical turns featuring opposite senses of helix. The STO control circuitry may be coupled to the STO via the electrical lines that connect the write driver to the write head, the lines that connect the read amplifier to the read head, or, if the disk drive is one with thermal fly-height control, the lines that connect the TFC circuitry with the heater. The invention also relates to a process for manufacturing of said product. The adjusting device, which is arranged substantially inside the drawer frame, has an actuating element accessible from the drawer interior, in the region of a lateral inner surface of the drawer frame facing the drawer interior.