Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 59 Machine-tools (including way-type unit head machines) for drilling, boring, milling, Commodity Code Description 84 59 10 Way-type unit head machines for drilling, boring... by removing metal 84 59 21 Numerically controlled 84 59 29 Drilling machines for removing metal, nes 84 59 31 Numerically controlled 84 59 39 Boring-milling machines for metal, nes 84 59 40 Boring machines for metal, nes 84 59 41 Numerically controlled 84 59 49 Electrically operated 84 59 51 Numerically controlled 84 59 59 Milling machines, knee-type, for metal (excl. numerically controlled) 84 59 61 Numerically controlled 84 59 69 Milling machines for metal, nes 84 59 70 Threading or tapping machines for metal, worked by removing metal, nes