This International Standard applies to inserted tooth cutters mounted on centring arbors having a 7/24 taper. These cutters are equipped either with high speed steel inserted teeth or with inserted teeth with brazed carbide tips. It concerns — firstly, the so-called "single purpose mounting" milling cutter, arbor located, to be used with a well-defined spindle nose having a 7/24 taper; — secondly, the so-called "dual purpose mounting" milling cutter, arbor located, to be used with both spindle nose No. 50 and spindle nose No. 60 having a 7/24 taper. Cutter bodies for single purpose mounting, having outside diameters of cutter bodies or nominal cutting diameters, D, from 160 to 630 mm, are intended to equip spindle noses Nos. 40 - 45 — 50 — 55 or 60 having a 7/24 taper; those for dual purpose mounting, having diameter D between 315 and 630 mm, are intended to equip either No. 50 or No. 60 spindle noses having a 7/24 taper. Dimensions for centring arbors and fitting dimensions for fixation are given in ISO 2940/I.