U.S. imports of Single Yarn of Polyester Staple Fibers, ≥85% by Weight, Not for Retail Sale (HS 550921) totaled $1.2M in September 2026, imported from 19 countries.
Importers of Single Yarn of Polyester Staple Fibers, ≥85% by Weight, Not for Retail Sale paid $182K in duties in September 2026, an average duty rate of 14.94% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: September 2026 dataPolyester staple fiber single yarns at or above the 85% threshold are among the most widely traded intermediate textile inputs globally, serving as feedstock for woven and knitted fabrics across apparel, home textiles, and technical end uses. The US tariff line 5509210000 covers this product, and imports are subject to Section 301 tariffs when originating from China — a significant cost consideration given the concentration of polyester staple yarn production in Asia. The 85% minimum weight requirement is a hard classification boundary separating these yarns from blended polyester lines.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
86 import shipments a month
Polyester staple single yarn classified under 5509210000 and originating from China is subject to Section 301 tariffs, which add to the standard MFN duty. This has prompted some importers to diversify sourcing to other Asian producers not subject to Section 301 measures. However, origin must be determined under US rules of origin — substantial transformation rules apply, and yarn processed through multiple countries requires careful origin analysis.
A manufacturer's fiber composition certificate or test report from an accredited laboratory is the standard documentation. CBP may request lab testing if the fiber content is disputed. For blended yarns near the 85% threshold, even small variations in composition can shift classification to a different subheading, so importers should build tolerance checks into supplier quality agreements.
Subheading 2 of 18 in heading 5509
Subheading 550921 · $1.2M of $10.0M
ImportsExports
Imports
$1.2MYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $15.8M of Single Yarn of Polyester Staple Fibers, ≥85% by Weight, Not for Retail Sale.
Through September 2026 · exports 11 of 12 months reported. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 550921 — Single Yarn of Polyester Staple Fibers, ≥85% by Weight, Not for Retail Sale, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5509210000 | Yrn N/Sew Thread Syn St Fb N/Rt Sl >=85% Wgt Plyst | $1.3M | 15.16% | 73.09% | $197K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5509210000 | Yrn N/Sew Thread Syn St Fb N/Rt Sl >=85% Wgt Plyst | $351K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · September 2026
origin
Indonesia and India together supply 68% of it. China pays 47.2% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
28.2% enters free of duty; duty collected equals 14.94% of imports for consumption.