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HSChapter 51
U.S. imports of combed wool yarn, not for retail sale, 85% or more wool by weight (HS 510710) totaled $4.8M in April 2026, traded with 22 countries.
Importers of Combed Wool Yarn, Not for Retail Sale, 85% or More Wool by Weight paid $538K in duties in April 2026 — an effective duty rate of 16% on $3.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Combed Wool Yarn, Not for Retail Sale, 85% or More Wool by Weight imports of $4.8M in April 2026 ran 20% above the year-to-date monthly average of $4.0M.
Last updated: April 2026 dataWorsted-system combed wool yarn at 85% or more wool content — the primary input for fine suiting, hosiery, and high-end knitwear — is split in the US schedule by fiber fineness: line 5107103000 covers yarn with fiber diameter of 18.5 microns or less (superfine merino territory), while 5107106000 captures all other qualifying combed wool yarn. Mexico and Canada are the leading US suppliers under this heading, a pattern driven by USMCA-integrated textile manufacturing rather than raw wool production. The superfine micron threshold at 18.5 microns is a hard classification boundary requiring mill-issued fiber-diameter documentation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yarn spun from fibers at or below 18.5 microns — typically superfine merino or similar premium grades — is classified under 5107103000, which may carry different duty treatment than the broader NESOI line 5107106000. Importers of high-end worsted yarn should always request a fiber-diameter certificate from the spinner to confirm which 10-digit line applies.
Mexico and Canada import raw wool or wool tops from producing countries, spin them into combed yarn domestically, and export the finished yarn to the US under USMCA rules of origin. This integrated North American textile supply chain allows the yarn to qualify for USMCA preferential treatment, making regional sourcing commercially attractive even when the underlying fiber originates elsewhere.
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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 |
|---|---|---|---|---|
| 5107106000 | YRN COMBED WL NT RTAIL SALE GT 85% BY WT WL, NESOI | $4.8M | 15.84% | $537K |
| 5107103000 | YN CMBED WL NT RTL SL GT 85% WL FIB LTEQ 18.5 MIC | $10K | 14.77% | $1K |
YRN COMBED WL NT RTAIL SALE GT 85% BY WT WL, NESOI
YN CMBED WL NT RTL SL GT 85% WL FIB LTEQ 18.5 MIC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5107100000 | YRN OF COMBED WOOL,NOT FOR RETAIL SALE,GE 85% WOOL | $18K |
YRN OF COMBED WOOL,NOT FOR RETAIL SALE,GE 85% WOOL
789 kg
WOVEN FABRICS OF COMBED WOOL OR FAH >=85% WL/FAH O
HS 511219
YARN & FINE AN HAIR, RETAIL PK, NOT UN 85% WL OR H
HS 510910
YARN, CARDED WOOL, NOT RETAIL, NOT UN 85% WT WOOL
HS 510610
WOV FAB CRD WL/FAH >=85% WL/FAH NESOI
HS 511119
WV FB CMB WL/FAH >=85% WL/FAH WEIGHT <=200G/M2
HS 511211
YARN, FINE ANIMAL HAIR, COMBED, NOT RETAIL PK
HS 510820
| State | Imports | Exports | Balance |
|---|---|---|---|
| North Carolina | $3.6M | -- | -$3.6M |
| Vermont | $344K | -- | -$344K |
| Virginia | $302K | $5K | -$296K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NORFOLK-NEWPORT NEWS, VA | $2.8M | -- | -$2.8M |
| BUFFALO-NIAGARA FALLS, NY | $856K | -- | -$856K |
| LAREDO, TX | $515K | -- | -$515K |