Harmonized Tariff Schedule of the U.S. › Chapter 55 Man-made staple fibres
5509.31.00.00Tariff line
Classification path
Yarn (other than sewing thread) of synthetic staple fibers, not put up for retail sale
5509
Containing 85 percent or more by weight of acrylic or modacrylic staple fibers
Single yarn (604)
5509.31.00.00
Rates of duty
General rate (Column 1)9%
SpecialFree (AU, BH, CL, CO, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Column 254%
Unitkg
Free (AU, BH, CL, CO, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Printed page 2030
Measure flags
for origin CN, entry date 2026-10-26 · base rate 9%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 5509.31.00 is on L3
Confirmed total 46.5% · max 46.5%Full duty breakdown →