This International Standard specifies the dimensions of metric series slotting cutters with plain bore and key drive intended for fitting to cutter arbors. These cutters may be made with different types of teeth — straight, helicoidal, etc. — the type of tooth being left to the choice of the manufacturer. The range of outside diameters of these cutters is taken from ISO/R 523, Recommended range of outside diameters for milling cutters.