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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 $428K in July 2026, traded with 18 countries.
Importers of Artificial Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Artificial Staple Fibers) paid $9K in duties in July 2026 — an effective duty rate of 17% on $56K in dutiable value, based on actual customs collections rather than the published tariff schedule. Artificial Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Artificial Staple Fibers) imports of $428K in July 2026 ran 17% above the year-to-date monthly average of $367K.
Last updated: July 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.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
19 shipments/mo
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.
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Subheading 2 of 5 in heading 5510
Subheading 551090 · $428K of $1.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5510906000 | Yrn Nt Swg Thd Art Stp Fib Nt Rt Sl Oth Yrn NESOI | $237K | 0.09% | 0.38% | $207 |
| 5510902000 | Yrn N Swg Th Art St Fb N Rt Sl Ot Yr M Syn Fb Sn Y | $152K | 5.94% | 35.90% | $9K |
| 5510904000 | Yrn N Swg Th Art St Fb N Rt Sl Ot Yr M Syn F M/C F | $38K | 0.00% | 0.00% | -- |
HSChapter 55
ImportsExports
Imports
$428KYoY · Pro
Exports
$0YoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Canada and France together supply 92% of it.
customs district
destination
entry
rate provision · imports
87.0% enters free of duty; the effective duty rate is 2.16%.