| 895.21 | Nib units (comprising nib, feed and collar), for pens | |
| 873.19 | Nibs specialized for the meters of subgroup 873.1 | |
| 874.12 | Nibs specialized for the recording instruments of heading 874.11 | |
| 874.26 | Nibs specialized for the recording instruments of heading 874.25 | |
| 874.56 | Nibs specialized for the recording instruments of heading 874.55 | |
| 873.29 | Nibs specialized for the recording instruments of subgroup 873.2 | |
| 874.69 | Nibs specialized for the recording instruments of subgroup 874.6 | |
| 874.79 | Nibs specialized for the recording instruments of subgroup 874.7 | |
| 072.1 | Nibs, cocoa | |
| 895.22 | Nibs, pen (incl. unfinished nibs roughly cut to shape) | |
| 284.1 | Niccolite | |
| 523.89 | Nickel (bis)sulphamidate | |
| 513.71 | Nickel (II) acetate tetrahydrate | |
| 683.12 | Nickel alloys (nickel predominating), unwrought | |
| 278.99 | Nickel arsenate, natural | |
| 523.84 | Nickel borate | |
| 278.99 | Nickel carbonate, natural | |
| 523.79 | Nickel carbonates, artificial | |
| 515.5 | Nickel carbonyl | |
| 523.81 | Nickel cyanide | |
| 523.29 | Nickel dichloride | |
| 523.1 | Nickel fluoroborate | |
| 513.74 | Nickel formate | |
| 524.95 | Nickel hydride | |
| 522.69 | Nickel hydroxides | |
| 523.59 | Nickel nitrate | |
| 278.99 | Nickel oxide, natural (excl. impure nickel oxides of heading 284.22) | |
| 522.69 | Nickel oxides (excl. bunsenite) | |
| 284.22 | Nickel oxides, impure | |
| 522.69 | Nickel sesquioxide | |
| 682.14 | Nickel silver, unwrought | |
| 523.49 | Nickel sulphates | |
| 278.99 | Nickel sulphide, natural | |
| 683.12 | Nickel-chromium alloys (nickel predominating), unwrought | |
| 683.12 | Nickel-chromium-iron alloys (nickel predominating), unwrought | |
| 683.12 | Nickel-copper alloys (nickel predominating), unwrought | |
| 522.69 | Nickelic oxide | |
| 284.1 | Nickelin | |
| 683.12 | Nickel-iron alloys (nickel predominating), unwrought | |
| 683.12 | Nickel-magnesium alloys (nickel predominating), unwrought | |