Analysis
HTS 5101.29.15 covers unimproved wool; other wool, not finer than 40s under heading 5101 (wool, not carded or combed).
The normal trade relations rate here is zero, shared by about 35% of the 82 tariff lines in chapter 51, a useful check when a neighbouring dutiable line is a candidate. Duty-free at the general rate does not rule out additional duties under Chapter 99, such as Section 301 or Section 232 measures, which depend on the country of origin.
Census statistics map these goods to NAICS 313110 (Fiber, Yarn, and Thread Mills), an industry of 250 US establishments employing 18,290 people. That concordance is how imports of this line are compared with US output.
All 6 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 5101.29.10 | Wool for special uses | Free |
| 5101.29.30 | Other: other wool, finer than 40s but not finer than 44s | Free |
| 5101.29.35 | Other: other wool, finer than 44s | Free |
| 5101.29.40 | Not processed in any manner beyond the degreased condition: other | 20.6¢/clean kg |
| 5101.29.65 | Unimproved wool; other wool, not finer than 46s | Free |
| 5101.29.70 | Other: other | 6.5¢/kg + 5.3% |