Applies both to cutters with inserted teeth, made from high speed steel or with brazed carbide tips, and to cutters equipped with indexable carbide tips. Concerns milling cutters, arbor located, to be used with a well-defined spindle nose having a 7/24 taper and milling cutter, arbor located, to be used bith spindle nose No. 50 and spindle nose No. 60 having a 7/24 taper. The general fitting dimensions are in accordance with ISO 297.