Specific tariff classification prevails over sole-use classification for pump shafts under Section XVI notes.

Classification of a pump shaft turned on whether it should be treated as a pump part under Tariff Heading 84.13, based on sole or principal use, or as a transmission shaft under Tariff Heading 84.33. The analysis states that Note 2(b) to Section XVI applies only to parts not already covered by Note 2(a), and that transmission shafts are specifically included in Heading 84.33. On that basis, Note 2(a) prevails over the sole-or-principal-use test in Note 2(b), so specific tariff coverage controls and the alternative classification based on use fails.

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Issues: Whether the pump shaft manufactured by the appellant was classifiable under Tariff Heading 84.13 on the basis that it was suitable solely or principally for use with pumps, or under Tariff Heading 84.33 as a transmission shaft by applying Note 2(a) to Section XVI of the Central Excise Tariff.

Analysis: Note 2(b) applies only to "other parts", meaning parts not covered by Note 2(a). Since transmission shafts are specifically included in Tariff Heading 84.33, the item fell within Note 2(a). As Note 2(a) takes precedence over Note 2(b), the plea for classification by sole or principal use could not succeed.

Conclusion: The classification contention of the appellant failed and the issue was decided against the appellant and in favour of the Revenue.

Ratio Decidendi: Where a tariff item is specifically covered by a heading, the specific classification prevails over classification based on sole or principal use under the residuary parts rule.

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