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 48 Auxiliary machinery for use with machines of heading 8444.00, 84.45, 84.46 or 84.47 ( 84 48 20 Parts and accessories of machines of heading 8444.00 or of their auxiliary machinery Commodity Code Description 84 48 20 00 Parts and accessories of machines of heading 8444.00 or of their auxiliary machinery