U.S. imports of Artificial Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Artificial Staple Fibers) (HS 551090) totaled $541K in September 2026, imported from 19 countries.
Importers of Artificial Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Artificial Staple Fibers) paid $15K in duties in September 2026, an average duty rate of 2.85% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Artificial Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Artificial Staple Fibers) imports of $541K in September 2026 ran 38% above the year-to-date monthly average of $391K.
Last updated: September 2026 dataArtificial staple fiber yarns blended with fibers other than wool, fine animal hair, or cotton — and below the 85% artificial fiber threshold — occupy this residual NESOI heading, which captures specialty constructions such as viscose-linen, modal-silk, or artificial-synthetic blends not covered by more specific subheadings. Canada leads US supply, with Indonesia, India, and Germany also among top sources. Four 10-digit lines (5510900000, 5510902000, 5510904000, 5510906000) subdivide the heading by secondary fiber type and yarn construction, making precise fiber identification and structural documentation essential for correct classification.
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14 import shipments a month
The four lines — 5510900000, 5510902000, 5510904000, and 5510906000 — reflect distinctions by secondary fiber type (e.g., synthetic fibers as the blending partner) and yarn construction (single vs. multiple/cabled). Importers should obtain the manufacturer's fiber composition certificate and spinning specification sheet to confirm both the blend percentages and the twist/ply structure before selecting the correct 10-digit line.
When both artificial and synthetic staple fibers are present, the classification depends on which fiber type predominates by weight. If synthetic fibers exceed artificial fibers, the yarn may belong under a Chapter 5509 heading rather than 551090. CBP can request laboratory fiber analysis to verify composition, and a misclassification can result in duty underpayment, penalties, and delays — making pre-import fiber testing a worthwhile investment for complex blends.
Subheading 1 of 5 in heading 5510
Subheading 551090 · $541K of $1.3M
ImportsExports
Imports
$541KYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $4.4M of Artificial Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Artificial Staple Fibers).
Through September 2026 · exports 4 of 12 months reported. Source: U.S. Census Bureau.
Imports · September 2026
origin
Canada and Indonesia together supply 96% of it. Italy pays 23.0% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
83.1% enters free of duty; duty collected equals 2.85% of imports for consumption.
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 |
|---|---|---|---|---|---|
| 5510902000 | Yrn N Swg Th Art St Fb N Rt Sl Ot Yr M Syn Fb Sn Y | $224K | 1.22% | 6.43% | $3K |
| 5510906000 | Yrn Nt Swg Thd Art Stp Fib Nt Rt Sl Oth Yrn NESOI | $169K | 1.07% | 2.31% | $2K |
| 5510904000 | Yrn N Swg Th Art St Fb N Rt Sl Ot Yr M Syn F M/C F | $19K | 0.00% | 0.00% | -- |
Trade Directory
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