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HTSUS, United States

5501.30.00.10

Containing 92 percent or more by weight of acrylonitrile units with filaments numbering fewer than 70,000 (+/-2000) with filament diameter 1.59 decitex (plus or minus 0.027) or less, or in a separable tow construction capable of being separated into tows of 70,000 (+/-2000) or fewer with filament diameter 1.59 decitex (plus or minus 0.027) or less.

Classification path

  1. Synthetic filament tow
  2. Acrylic or modacrylic
  3. Containing 92 percent or more by weight of acrylonitrile units with filaments numbering fewer than 70,000 (+/-2000) with filament diameter 1.59 decitex (plus or minus 0.027) or less, or in a separable tow construction capable of being separated into tows of 70,000 (+/-2000) or fewer with filament diameter 1.59 decitex (plus or minus 0.027) or less.

Rates of duty

General (MFN)
7.5%
Column 2Cuba, North Korea, Russia, Belarus
45%
Unit of quantity
kg

Trade agreement rates

FreeU.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

Related lines in heading 5501

About heading 5501

Synthetic filament tow

Heading 5501 covers synthetic filament tow, which is a continuous bundle of synthetic filaments used mainly for later conversion into staple fiber or top. The heading is split first by polymer type: nylon or other polyamides, polyesters, acrylic or modacrylic, polypropylene, and other. Acrylic or modacrylic tow has a further split based on specified acrylonitrile content, filament count, filament diameter, or separable tow construction.

Full guide to heading 5501

Products in this heading

  • Aramid filament tow used as precursor for carbon fiber
  • Nylon filament tow for tow-to-top processing
  • Polyester filament tow for conversion into staple fiber
  • Acrylic filament tow for acrylic yarn production
  • Modacrylic filament tow for protective textile yarns
  • Polypropylene filament tow for industrial textile uses
  • Other synthetic filament tow not covered by the named polymers

Frequently asked questions

What is the HTS code for polyester filament tow?

Polyester synthetic filament tow is classified in 5501.20.00.00; the general (MFN) rate is 7.5%.

What is the duty on aramid filament tow?

Aramid filament tow falls under 5501.11.00.00; the general (MFN) rate is 7.5%. Other nylon or polyamide tow uses 5501.19.00.00 at the same general (MFN) rate of 7.5%.

How do I classify acrylic filament tow?

Start with 5501.30.00.10 if the tow meets the listed acrylonitrile content, filament count, filament diameter, or separable tow construction requirements; otherwise use 5501.30.00.90. Both carry a general (MFN) rate of 7.5%.

Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.

HTS 5501.30.00.10: Containing 92 percent or more by weight of acrylonitrile un..., 7.5% duty | HTSBase