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 31 Parts suitable for use solely or principally with the machinery of headings 8425 to 8430 84 31 43 - - Parts for boring or sinking machinery of subheading 8430.41 or 8430.49 Commodity Code Description 84 31 43 00 - - Parts for boring or sinking machinery of subheading 8430.41 or 8430.49