Chapter 55: Man-made staple fibers

HTS heading 5509: Yarn (other than sewing thread) of synthetic staple fibers, not put up for retail sale

35 numbered lines under heading 5509, including 27 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.

HTS heading 5509
HTS codeDescriptionUnitGeneralSpecialColumn 2
5509Yarn (other than sewing thread) of synthetic staple fibers, not put up for retail sale:
Containing 85 percent or more by weight of staple fibers of nylon or other polyamides:
5509.11.00.00Single yarn (604)kg9.4%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.12.00.00Multiple (folded) or cabled yarn (604)kg10.6%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)61.5%
Containing 85 percent or more by weight of polyester staple fibers:
5509.21.00.00Single yarn (604)kg9.7%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.22.00Multiple (folded) or cabled yarn10.6%Free (AU,BH,CL,CO,IL,JO,KR,MA,OM,P,PA,PE,S,SG)61.5%
5509.22.00.10Multiple (folded), with a final "Z" twist (200)kg
5509.22.00.90Other (604)kg
Containing 85 percent or more by weight of acrylic or modacrylic staple fibers:
5509.31.00.00Single yarn (604)kg9%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.32.00.00Multiple (folded) or cabled yarn (604)kg10%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)61.5%
Other yarn, containing 85 percent or more by weight of synthetic staple fibers:
5509.41.00Single yarn9%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.41.00.10Of polyvinyl alcohol (PVA) fibers (604)kg
5509.41.00.90Other (604)kg
5509.42.00Multiple (folded) or cabled yarn7%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)61.5%
5509.42.00.10Of polyvinyl alcohol (PVA) fibers (604)kg
5509.42.00.90Other (604)kg
Other yarn, of polyester staple fibers:
5509.51Mixed mainly or solely with artificial staple fibers:
5509.51.30.00Single yarn (607)kg9.7%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.51.60.00Multiple (folded) or cabled yarn (607)kg10.6%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)61.5%
5509.52.00.00Mixed mainly or solely with wool or fine animal hair (607)kg12%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
5509.53.00Mixed mainly or solely with cotton13.2%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
5509.53.00.30Not exceeding 52 nm (607)kg
5509.53.00.60Exceeding 52 nm (607)kg
5509.59.00.00Other (607)kg13.2%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
Other yarn, of acrylic or modacrylic staple fibers:
5509.61.00.00Mixed mainly or solely with wool or fine animal hair (607)kg13.2%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
5509.62.00.00Mixed mainly or solely with cotton (607)kg12%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
5509.69Other:
Mixed mainly or solely with artificial staple fibers:
5509.69.20.00Single yarn (607)kg9%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.69.40.00Multiple (folded) or cabled yarn (607)kg10%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)61.5%
5509.69.60.00Other (607)kg13.2%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
Other yarn:
5509.91.00.00Mixed mainly or solely with wool or fine animal hair (607)kg12%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
5509.92.00.00Mixed mainly or solely with cotton (607)kg7.5%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%
5509.99Other:
Mixed mainly or solely with artificial staple fibers:
5509.99.20.00Single yarn (607)kg9%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)54%
5509.99.40.00Multiple (folded) or cabled yarn (607)kg10.6%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)61.5%
5509.99.60.00Other (607)kg13.2%Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG)81%

Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.

Source: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.