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HTS lookup › Chapter 55 › Heading 5509

HTS 5509.51 (5509.51.00) duty rate

5509.51.00 is not a rated tariff line. Subheading 5509.51 (Yarn (other than sewing thread) of synthetic staple fibers, not put up for retail sale › Other yarn, of polyester staple fibers › Mixed mainly or solely with artificial staple fibers) is split into 2 tariff lines, and the duty rate depends on which one your product falls under:

LineDescriptionGeneralSection 301 (China)Exclusions
5509.51.30Mixed mainly or solely with artificial staple fibers: Single yarn (607)9.7%List 3 +25%
5509.51.60Multiple (folded) or cabled yarn (607)10.6%List 3 +25%

Open the line that matches your product for its full rate table, Section 301 actions, exclusions, statistical suffixes and a free duty calculator.

Official USITC HTS, 2026HTSRev22 · check on hts.usitc.gov

Subheading 5509.51 at a glance

Heading 5509 · Chapter 55 · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC); not legal or customs advice. Classification is decided by CBP.

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