4503.10.30

Analysis

HTS 4503.10.30 covers wholly of cork, of a thickness (or length) greater than the maximum diameter under heading 4503 (articles of natural cork).

There is no general-rate duty on this line, which puts it with roughly 95% of the 19 tariff lines in chapter 45 that are also free. 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.

The other lines in the same group are 4503.10.20 (with maximum diameter not over 19 mm, duty-free), 4503.10.40 (other: other, duty-free) and 4503.10.60 (corks and stoppers: other, duty-free).

Census statistics map these goods to NAICS 321999 (All Other Miscellaneous Wood Product Manufacturing), an industry of 2,327 US establishments employing 31,381 people, the industry a domestic producer of these goods reports under.

All 3 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.