Tariff classification of threaded studs as headless bolts under the specific bolts-and-nuts heading prevails over engine-use claim.

Threaded studs were treated as headless bolts, and the presence of a specific tariff entry for bolts and nuts under Chapter Heading 8313.10 prevailed over the broader claim under Chapter Heading 8409.00. The contention that the goods were specially designed for use in engines under Chapter 84.07 and 84.08 was not established, so the goods were classifiable under Chapter Heading 8313.10 and not under Chapter Heading 8409.00.

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Issues: Whether threaded studs were classifiable under Chapter Heading 8409.00 or under Chapter Heading 8313.10.

Analysis: The product was found to be a headless bolt and a specific tariff entry existed for bolts and nuts under Chapter Heading 8313.10. The claim that the goods were specially designed for use in engines falling under Chapter 84.07 and 84.08 was not established.

Conclusion: Threaded studs were classifiable under Chapter Heading 8313.10 and not under Chapter Heading 8409.00.

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