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HSChapter 55
U.S. imports of synthetic staple fiber yarn mixed with wool or fine animal hair, not for retail sale (under 85% synthetic staple fibers) (HS 550991) totaled $119K in June 2026, traded with 4 countries.
Importers of Synthetic Staple Fiber Yarn Mixed with Wool or Fine Animal Hair, Not for Retail Sale (Under 85% Synthetic Staple Fibers) paid $26K in duties in June 2026 — an effective duty rate of 22% on $119K in dutiable value, based on actual customs collections rather than the published tariff schedule. Synthetic Staple Fiber Yarn Mixed with Wool or Fine Animal Hair, Not for Retail Sale (Under 85% Synthetic Staple Fibers) imports of $119K in June 2026 ran 162% above the year-to-date monthly average of $45K.
Blending synthetic staple fibers with wool or fine animal hair at less than 85% synthetic content by weight places these yarns in a niche classification that reflects both the premium fiber input and the industrial supply channel — not put up for retail sale. The wool or fine animal hair component typically drives end-use toward higher-value apparel and suiting fabrics, where the synthetic content adds durability or cost efficiency. Lithuania and Romania are the leading US suppliers under this heading, with Italy also a notable source reflecting European specialty textile manufacturing. A single 10-digit line, 5509910000, covers this heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Both countries have established worsted and semi-worsted spinning industries with long traditions of blending synthetic staple fibers with wool. Their mills produce yarn specifications — twist levels, count ranges, and blend ratios — that align with US apparel and suiting fabric manufacturers' requirements, giving them a competitive edge in this niche segment.
Yarns containing fine animal hair (such as cashmere, angora, or alpaca) are not subject to USDA APHIS live-animal restrictions once processed into yarn, but importers should be prepared to substantiate the fiber identity and percentage with mill certificates, as misidentification of fiber type is a common basis for CBP examination and potential reappraisal.
Supplier Network
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Monthly import values over time
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 |
|---|---|---|---|---|---|
| 5509910000 | YRN N SWG TH SYN STP FB N RTL SL OTH YRN MX WL/FAH | $119K | 22.12% | 100.00% | $26K |
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
SYN STP FIB NT CRD, CMB OR PRSD SPNG, POLYPROPLENE
HS 550340
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 |
|---|---|---|---|
| New Jersey | $116K | -- | -$116K |
| North Carolina | $2K | -- | -$2K |
| California | $554 | -- | -$554 |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $116K | -- | -$116K |
| NORFOLK-NEWPORT NEWS, VA | $2K | -- | -$2K |
| CLEVELAND, OH | $554 | -- | -$554 |