To facilitate the necessary sufficient coating of a fixative to a proper position by contacting to an adjusted member and providing a groove for coating the fixative to an adjust screw on the screw hole opening surface of the adjust screw for adjusting its position minutely and locking.

On a magnetic head stand 1, a magnetic head 2 is supported turnably and an adjust screw 3 is thereadedly engaged with the screw hole of the magnetic head stand 1 and its tip is contacted with a projection part of the magnetic head 2. A groove 1a reaching to the screw hole is provided on the screw hole opening surface of the magnetic head stand 1 and its bottom is inclined so as to be sharrow toward the screw hole opening part. After adjusting the screwed depth of the adjust screw 3 and setting the turning position of the magnetic head 2, a nozzle 4a of a fixative sprayer 4 is inserted to the groove 1a and a screw lock is discharged by a prescribed amount. The screw lock is adhered to the screw hole opening and adjust screw 3 by a fluidity and the adjust screw 3 is fixed. Therefore, the nozzle 4a can be positioned to a proper position easily and a workability is improved and the adjust screw 3 is fixed surely.