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HSChapter 55
U.S. imports of woven fabrics of other synthetic staple fibers (not polyester, acrylic, or modacrylic), under 85%, mixed with other fibers (nesoi) (HS 551599) totaled $397K in April 2026, traded with 28 countries.
Importers of Woven Fabrics of Other Synthetic Staple Fibers (Not Polyester, Acrylic, or Modacrylic), Under 85%, Mixed with Other Fibers (NESOI) paid $75K in duties in April 2026 — an effective duty rate of 19% on $393K in dutiable value, based on actual customs collections rather than the published tariff schedule. Woven Fabrics of Other Synthetic Staple Fibers (Not Polyester, Acrylic, or Modacrylic), Under 85%, Mixed with Other Fibers (NESOI) imports of $397K in April 2026 ran 19% above the year-to-date monthly average of $334K.
Last updated: April 2026 dataResidual woven fabrics of non-polyester, non-acrylic, non-modacrylic synthetic staple fibers blended with fibers other than manmade filaments — including wool, fine animal hair, cotton, or other natural fibers — are captured here when synthetic staple content is under 85% by weight. Italy leads US imports, with India, China, Turkey, and France also supplying the market, reflecting a globally distributed production base for specialty synthetic blends. The US schedule is notably detailed, with wool/fine animal hair blend lines subdivided by the 36% wool weight threshold and combing status (lines 5515990510, 5515990520, 5515991010, 5515991020), plus separate lines for cotton and other fiber blends. Given the residual nature of this heading, importers should systematically rule out all more specific headings before classifying here.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The classification logic requires ruling out headings 551511–551519 (polyester staple blends) and 551521–551529 (acrylic/modacrylic staple blends) before arriving at 551599. If the synthetic staple fiber is confirmed as neither polyester nor acrylic/modacrylic, and the blending fiber is cotton (not a manmade filament), then 551599 applies. A fiber identification report specifying the polymer type is the key supporting document.
Lines 5515990510 and 5515990520 apply when wool or fine animal hair is 36% or more by weight (uncombed and combed, respectively), while lines 5515991010 and 5515991020 cover fabrics where wool or fine animal hair is below that threshold. When wool content is near the 36% boundary, a precise gravimetric fiber analysis is essential, and a binding ruling from CBP may be warranted to lock in the correct line before large-volume shipments.
Supplier Network
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| DOMINICAN REPUBLIC | -- | $495K | +$495K |
| MEXICO | -- | $312K | +$312K |
| ITALY | $242K | -- | -$242K |
| CANADA | -- | $227K | +$227K |
| INDIA | $50K | -- | -$50K |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 5515999090 | OTH WOVEN FAB OF SYNTHETIC STAPLE FIB OTH NESOI | $361K | 18.62% | $67K |
| 5515990510 | O WV FB SYN SF O WV FB M W/FAH GT=36% WGT W/FAH | $15K | 32.84% | $5K |
| 5515999005 | OTH WOV FAB OF SYN STP FIB OTH YR DF CL EX BD/JC W | $15K | 18.14% | $2K |
| 5515991020 | OTH WOV FAB SYN ST FB MIXED WOOL/FN AN HAIR, COMBD | $3K | 21.99% | $725 |
| 5515999010 | OTH WOVEN FAB OF SYNTHETIC STAPLE FIBERS O BLUE DN | $1K | 18.47% | $249 |
| 5515999040 | OTH WOV FABRIC OF SYNTHETIC STP FIB OT SAT/TWIL WV | $1K | 18.46% | $233 |
| 5515991010 | OTH WOV FAB SYN ST FB MIXED WOOL/FN AN HAIR,NT CMB | $0 | -- | -- |
| 5515999015 | OTH WOV FAB OF SYN STPL FIB OTH POPLIN/BROADCLOTH | $0 | -- | -- |
| 5515990520 | O WV FB SYN SF O WV FB M W/FAH GT=36% WT W/FAH CMB | $0 | -- | -- |
OTH WOVEN FAB OF SYNTHETIC STAPLE FIB OTH NESOI
O WV FB SYN SF O WV FB M W/FAH GT=36% WGT W/FAH
OTH WOV FAB OF SYN STP FIB OTH YR DF CL EX BD/JC W
OTH WOV FAB SYN ST FB MIXED WOOL/FN AN HAIR, COMBD
OTH WOVEN FAB OF SYNTHETIC STAPLE FIBERS O BLUE DN
OTH WOV FABRIC OF SYNTHETIC STP FIB OT SAT/TWIL WV
OTH WOV FAB SYN ST FB MIXED WOOL/FN AN HAIR,NT CMB
OTH WOV FAB OF SYN STPL FIB OTH POPLIN/BROADCLOTH
O WV FB SYN SF O WV FB M W/FAH GT=36% WT W/FAH CMB
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5515999000 | OTHER WOV FAB OF SYNTHETIC STPL FIBERS OTHER-NESOI | $843K |
| 5515992000 | OTH WOV FAB SYN STPL FIB OTH MIX M/S WL OR FN AN H | $308K |
OTHER WOV FAB OF SYNTHETIC STPL FIBERS OTHER-NESOI
163.0K m2
OTH WOV FAB SYN STPL FIB OTH MIX M/S WL OR FN AN H
17.8K m2
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 |
|---|---|---|---|
| Tennessee | $28K | $298K | +$270K |
| Massachusetts | -- | $326K | +$326K |
| South Carolina | $20K | $272K | +$252K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAN JUAN, PR | $3K | $326K | +$323K |
| EAGLE PASS, TX | -- | $298K | +$298K |
| CHAMPLAIN-ROUSES POINT, NY | -- | $186K | +$186K |