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 for drilling,boring,milling...by removing metal,other than...heading 84.58 84 59 51 Numerically controlled 84 59 51 00 Numerically controlled Commodity Code Description 84 59 51 00 000 Numerically controlled