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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 $4.1M in July 2026, traded with 26 countries.
Importers of Combed Wool Yarn, Not for Retail Sale, 85% or More Wool by Weight paid $364K in duties in July 2026 — an effective duty rate of 15% on $2.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 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.
354 shipments/mo
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.
Subheading 1 of 2 in heading 5107
Subheading 510710 · $4.1M of $4.5M
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 |
|---|---|---|---|---|---|
| 5107106000 | Yrn Combed Wl Nt Rtail Sale Gt 85% by Wt Wl, NESOI | $4.1M | 8.87% | 60.62% | $362K |
| 5107103000 | Yn Cmbed Wl Nt Rtl Sl Gt 85% Wl Fib Lteq 18.5 Mic | $10K | 14.13% | 100.00% | $1K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5107100000 | Yrn of Combed Wool,not for Retail Sale,Ge 85% Wool | $71K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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ImportsExports
Imports
$4.1MYoY · Pro
Exports
$71KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Canada and Romania together supply 48% of it.
customs district
destination
entry
rate provision · imports
39.3% enters free of duty; the effective duty rate is 8.88%.