| Tariff Classification |
| 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 |
| chapter 84 | Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof |
| 84.31 | Parts suitable for use solely or principally with the machinery of headings 84.25 to 84.30: |
| －Of machinery of heading 84.26, 84.29 or 84.30: |
| 8431.43 | －－Parts for boring or sinking machinery of subheading 8430.41 or 8430.49 |
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