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HSChapter 55
U.S. imports of synthetic staple fiber yarn mixed with other fibers (nesoi), not for retail sale (under 85% synthetic staple fibers) (HS 550999) totaled $213K in April 2026, traded with 11 countries.
Synthetic Staple Fiber Yarn Mixed with Other Fibers (NESOI), Not for Retail Sale (Under 85% Synthetic Staple Fibers) imports of $213K in April 2026 ran 27% below the year-to-date monthly average of $292K.
Last updated: April 2026 dataResidual in structure, this heading captures synthetic staple fiber yarns whose secondary fiber blend does not qualify as wool, fine animal hair, or cotton — covering combinations such as synthetic-linen, synthetic-silk, or multi-fiber constructions not elsewhere specified. The 'NESOI' designation makes precise fiber documentation especially important, since CBP may scrutinize whether a shipment truly falls outside the more specific headings. Canada and Turkey lead US supply, with the United Kingdom, China, and France also contributing, reflecting a diverse sourcing base for specialty blended yarns. Three 10-digit lines (5509990000, 5509992000, 5509996000) subdivide this heading by construction and fiber combination.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A yarn qualifies as NESOI here when its secondary fiber is neither wool/fine animal hair nor cotton, and the synthetic content is below 85% by weight. Common misclassification risks include yarns with a cotton component that is borderline in weight — if cotton is the primary non-synthetic fiber, the correct heading may be 550992. Detailed fiber analysis reports are the best defense against reclassification.
The three lines — 5509990000, 5509992000, and 5509996000 — reflect differences in yarn construction and fiber combination. Importers should work with the manufacturer to confirm both the fiber blend percentages and whether the yarn is single, multiple, or cabled, as these structural attributes drive the correct 10-digit selection and affect the applicable duty rate.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $190K | -- | -$190K |
| FRANCE | $13K | -- | -$13K |
| UNITED KINGDOM | $6K | -- | -$6K |
| JAPAN | $2K | -- | -$2K |
| MEXICO | $731 | -- | -$731 |
Monthly import values over time
Supplier Network
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 5509996000 | YRN N SWG THD SYT ST FB N RTL SALE OTHER YRN NESOI | $213K | 23.79% | $5K |
| 5509992000 | YRN N SWG TH SY ST FB N RT SL OT Y OT M ART F S YN | $0 | -- | -- |
YRN N SWG THD SYT ST FB N RTL SALE OTHER YRN NESOI
YRN N SWG TH SY ST FB N RT SL OT Y OT M ART F S YN
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5509990000 | YRN N SW TH SYN STP FIB N RT SL OT YRNS OTH-NESOI | $0 |
YRN N SW TH SYN STP FIB N RT SL OT YRNS OTH-NESOI
SYN STP FIB NT CRD, CMB OR PRSD SPNG, OF POLYESTER
HS 550320
ARTIF STP FIB NT CRD, CMB OR PRSD SPNG, VIS RAYON
HS 550410
YRN N SW TH MM ST FIB RT SL SYN STP FIB >=85% S FB
HS 551110
STPL FIB ARAMIDS NOT CARD/COMBD/PRCSD FOR SPINNING
HS 550311
SYN STP FIB NT CRD, CMB OR PRSD SPNG, ACRY/MODACRY
HS 550330
SYN STP FIB NOT CARD, CMB OR PRSD SPNG, NESOI
HS 550390
| State | Imports | Exports | Balance |
|---|---|---|---|
| North Carolina | $190K | -- | -$190K |
| Massachusetts | $13K | -- | -$13K |
| California | $5K | -- | -$5K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| ALEXANDRIA BAY, NY | $190K | -- | -$190K |
| NEWARK, NJ | $17K | -- | -$17K |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $3K | -- | -$3K |