U.S. imports of Wool Tops and Other Combed Wool (Not in Fragments) (HS 510529) totaled $507K in August 2026, imported from 29 countries.
Importers of Wool Tops and Other Combed Wool (Not in Fragments) paid $64K in duties in August 2026, an average duty rate of 12.59% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Wool Tops and Other Combed Wool (Not in Fragments) imports of $507K in August 2026 ran 53% above the year-to-date monthly average of $331K.
Last updated: August 2026 dataContinuous wool tops — the primary worsted-spinning input produced by combing long-staple wool into aligned, parallel fiber — are classified under tariff line 5105290000 and are a foundational commodity for fine suiting, hosiery, and technical textile production. Uruguay and the United Kingdom are the leading US suppliers, with China, Australia, and Argentina also contributing; the Southern Hemisphere origins reflect the dominance of Merino and Corriedale breeds in fine-wool production.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
55 import shipments a month
Worsted mills generally specify fiber diameter in microns (e.g., 18–22 microns for fine Merino tops), staple length, vegetable matter content, and yield percentage. These specifications are typically documented in a wool test certificate issued by an accredited testing laboratory and accompany the commercial invoice. Misrepresentation of micron count can affect both classification and downstream product labeling compliance.
Both subheadings fall within the same HTS chapter and carry similar duty structures, but they are distinct tariff lines and must be classified based on the physical form of the combed wool at the time of importation. Continuous tops (510529) and fragmented combed wool (510521) should not be commingled on a single entry line; separate line items are required if both forms are present in a shipment.
Subheading 1 of 6 in heading 5105
Subheading 510529 · $507K of $575K
Trade Directory
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ImportsExports
Imports
$507KYoY · free account
Exports
$4KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.7M of Wool Tops and Other Combed Wool (Not in Fragments) and exported $926K.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5105290000 | Wool Tops and Other Combed Wool (Not in Fragments) | $507K | 12.59% | 98.62% | $64K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5105290000 | Wool Tops and Other Combed Wool (Not in Fragments) | $4K |
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.
Imports · August 2026
origin
Uruguay and United Kingdom together supply 91% of it.
customs district
destination
entry
rate provision · imports
1.4% enters free of duty; duty collected equals 12.59% of imports for consumption.